2022

Journal

• Salman Ahmed Shaikh, Hiroyuki Kitagawa, Akiyoshi Matono, Komal Mariam, and Kyoung-Sook Kim,
  "GeoFlink: An Efficient and Scalable Spatial Data Stream Management System",
  IEEE Access, Vol. 10, pp. 24909-24935, 2022. (Impact Factor 3.367).
  DOI: https://doi.org/10.1109/ACCESS.2022.3154063
• Bohnishikha Halder, Md. Manjur Ahmed, Toshiyuki Amagasa, Nor Ashidi Mat Isa, Rahat Hossain Faisal, Md. Mostafijur Rahman,
  "Missing information in imbalanced data stream: fuzzy adaptive imputation approach,"
  Appl. Intell, Vol. 52, No. 5, pp. 5561-5583, 2022.

Conference

• Savong Bou, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "InTrans: Fast Incremental Transformer for Time Series Data Prediction",
  Proceedings of the 33rd International Conference on Database and Expert Systems Applications (DEXA 2022), Page. - , Vienna, Austria, August 22nd - 24th 2022. (Full paper) (accepted)
• Vijdan Khalique and Hiroyuki Kitagawa,
  "BPF: An Effective Cluster Boundary Points Detection Technique",
  Proceedings of the 33rd International Conference on Database and Expert Systems Applications (DEXA 2022), Page. - , Vienna, Austria, August 22nd - 24th 2022. (Full paper) (accepted)
• John Bosco Mugeni, Toshiyuki Amagasa,
  "A graph-based blocking approach for entity matching using pre-trained contextual embedding models",
  The 37th ACM/SIGAPP Symposium on Applied Computing April 2022 (SAC 2022), pp. 357-364, Virtual Conference, April 25-29, 2022.
• Hailemariam Mehari Yohannes, Toshiyuki Amagasa,
  "Named-entity recognition for a low-resource language using pre-trained language model",
  The 37th ACM/SIGAPP Symposium on Applied Computing April 2022 (SAC 2022), pp. 837-844, Virtual Conference, April 25-29, 2022.

2021

Journal

• Shohei Matsugu, Hiroaki Shiokawa, and Hiroyuki Kitagawa,
  "Fast Algorithm for Attributed Community Search",
  Journal of Information Processing, Vol. 29, pp. 188-196, February 2021.
  DOI: https://doi.org/10.2197/ipsjjip.29.188
• Happy Buzaaba, Toshiyuki Amagasa,
  "Question Answering Over Knowledge Base: A Scheme for Integrating Subject and the Identified Relation to Answer Simple Questions",
  SN Computer Science, Vol. 2, No. 1, Article 25, 2021.
  DOI: https://doi.org/10.1007/s42979-020-00421-7
• Savong Bou, Hiroyuki Kitagawa, and Toshiyuki Amagasa,
  "CPiX: Real-Time Analytics over Out-of-Order Data Streams by Incremental Sliding-Window Aggregation",
  IEEE Transactions on Knowledge and Data Engineering. (Impact Factor 4.935)
  DOI: https://doi.org/10.1109/TKDE.2021.3054898
• Taro Aso, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "A System for Relation-Oriented Faceted Search over Knowledge Bases",
  International Journal of Web Information Systems (IJWIS), Vol. 17, No. 6, pp. 698-713, 2021.
• David Ifeoluwa Adelani, Jade Abbott, Graham Neubig, Daniel D’souza, Julia Kreutzer, Constantine Lignos, Chester Palen-Michel, Happy Buzaaba, Shruti Rijhwani, Sebastian Ruder, Stephen Mayhew, Israel Abebe Azime, Shamsuddeen H. Muhammad, Chris Chinenye Emezue, Joyce Nakatumba-Nabende, Perez Ogayo, Aremu Anuoluwapo, Catherine Gitau, Derguene Mbaye, Jesujoba Alabi, Seid Muhie Yimam, Tajuddeen Rabiu Gwadabe, Ignatius Ezeani, Rubungo Andre Niyongabo, Jonathan Mukiibi, Verrah Otiende, Iroro Orife, Davis David, Samba Ngom, Tosin Adewumi, Paul Rayson, Mofetoluwa Adeyemi, Gerald Muriuki, Emmanuel Anebi, Chiamaka Chukwuneke, Nkiruka Odu, Eric Peter Wairagala, Samuel Oyerinde, Clemencia Siro, Tobius Saul Bateesa, Temilola Oloyede, Yvonne Wambui, Victor Akinode, Deborah Nabagereka, Maurice Katusiime, Ayodele Awokoya, Mouhamadane MBOUP, Dibora Gebreyohannes, Henok Tilaye, Kelechi Nwaike, Degaga Wolde, Abdoulaye Faye, Blessing Sibanda, Orevaoghene Ahia, Bonaventure F. P. Dossou, Kelechi Ogueji, Thierno Ibrahima DIOP, Abdoulaye Diallo, Adewale Akinfaderin, Tendai Marengereke, Salomey Osei
  "MasakhaNER: Named Entity Recognition for African Languages"
  In Transactions of the Association for Computational Linguistics (2021) 9: 1116-1131 (MIT Press Direct)
  https://direct.mit.edu/tacl/article/doi/10.1162/tacl_a_00416/107614/MasakhaNER-Named-Entity-Recognition-for-African

Conference

• Hiroaki Shiokawa,
  "Scalable Affinity Propagation for Massive Datasets,"
  In Proceedings of the 35th AAAI Conference on Artificial Intelligence (AAAI2021), 35(11), pp.9639-9646, Virtual Conference, February 2021.
• Hayata Takagi, Hanxiong Chen, Kazutaka Furuse, and Hiroyuki Kitagawa, (Best Paper Award)
  "Aggregate Nearest Neighborhood Queries",
  Proc. Future of Information and Communications Conference (FICC) 2021, April 2021.
• Yasuyuki Kato, Hanxiong Chen, Kazutaka Furuse, and Hiroyuki Kitagawa,
  "Unifying Spatial Keyword Indexing in Continuous Search on Dynamic Objects",
  Proc. Future of Information and Communications Conference (FICC) 2021, April 2021.
• Vijdan Khalique and Hiroyuki Kitagawa,
  "VOA*: Fast Angle-Based Outlier Detection Over High-Dimensional Data Streams",
  Proc. 25th Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD2021), pp. 44-52, May 11-14, 2021. (Acceptance rate 20%)
  DOI: https://doi.org/10.1007/978-3-030-75762-5_4
• Ryohei Kobayashi, Kento Miura, Norihisa Fujita, Taisuke Boku, Toshiyuki Amagasa,
  "A Sorting Library for FPGA Implementation in OpenCL Programming,"
  Proc. 11th International Symposium on Highly Efficient Accelerators and Reconfigurable Technologies (HEART 2021), Article No. 1, pp. 1-6, June 21-23, 2021.
• Shunta Ishihara, Chiemi Watanabe, Toshiyuki Amagasa,
  "Supporting Insertion in Encrypted Multi-Maps with Volume Hiding",
  The 5th IEEE International Workshop on Big Data and IoT Security in Smart Computing (IEEE BITS 2021) in conjunction with SMARTCOMP 2021, pp. 264-269, Virtual Conference, August 23rd, 2021. (to appear)
• Carina Miwa Yoshimura and Hiroyuki Kitagawa,
  "TLV-Bandit: Bandit Method for Collecting Topic-related Local Tweets",
  Proc. IEEE 4th International Conference on Multimedia Information Processing and Retrieval (MIPR2021), pp. 56-62, September 8-10, 2021. Tokyo, Japan. (Online)
• Masaya Yamada, Hiroyuki Kitagawa, Toshiyuki Amagasa, Akiyoshi Matono,
  "Augmented Lineage: Traceability of Data Analysis Including Complex UDFs",
  In Proceedings of the 32nd International Conference on Database and Expert Systems Applications (DEXA2021) , Vol. 1, pp. 65-77, September 27-30, 2021. (Online) (Acceptance rate 27%)
  DOI: https://doi.org/10.1007/978-3-030-86472-9_6
• Shuya Suganami and Toshiyuki Amagasa,
  "GPU-accelerated vertex orbit counting for 5-vertex subgraphs",
  In Proceedings of the 32nd International Conference on Database and Expert Systems Applications (DEXA2021) , Vol. 1, pp. 205-217, September 27-30, 2021. (Online) (Acceptance rate 27%)
  DOI: https://doi.org/10.1007/978-3-030-86472-9_19
• Kota Yukawa and Toshiyuki Amagasa,
  "Online Optimized Product Quantization for Dynamic Database using SVD-Updating",
  In Proceedings of the 32nd International Conference on Database and Expert Systems Applications (DEXA2021) , Vol. 1, pp. 273-284, September 27-30, 2021. (Online) (Acceptance rate 27%)
  DOI: https://doi.org/10.1007/978-3-030-86472-9_25
• Hiroaki Shiokawa,
  "Fast ObjectRank for Large Knowledge Databases,"
  In Proceedings of the 20th International Semantic Web Conference (ISWC2021), Virtual Conference, Octorber 2021. (Research Track)
• Hina Suzuki, Hanxiong Chen, Kazutaka Furuse, and Toshiyuki Amagasa,
  "Dense Nearest Neighborhood Query",
  EasyChair Preprint No. 6606, 4th International Conference on Intelligent Technologies and Applications (INTAP 2021), Online (Grimstad, Norway), Oct. 11-13, 2021.
• Suomi Kobayashi, Shohei Matsugu, Hiroaki Shiokawa,
  "Fast Indexing Algorithm for Efficient kNN Query on Complex Networks,"
  In Proceedings of the 2021 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining (ASONAM2021), Virtual Conference, November 2021.
• Happy Buzaaba, Toshiyuki Amagasa,
  "A Scheme for Efficient Question Answering with Low Dimension Reconstructed Embeddings",
  The 23rd International Conference on Information Integration and Web-based Applications & Services (iiWAS 2021), pp. 303-310, Virtual Conference (Linz, Austria), Nov. 29-Dec. 1, 2021.
• Taro Aso, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "A Method for Searching Documents using Knowledge Bases",
  The 23rd International Conference on Information Integration and Web-based Applications & Services (iiWAS 2021), pp. 250-258, Virtual Conference (Linz, Austria), Nov. 29-Dec. 1, 2021.
• Marika Nakano, Toshiyuki Amagasa,
  "Query Processing over Multiple Knowledge Bases and Text Documents",
  The 23rd International Conference on Information Integration and Web-based Applications & Services (iiWAS 2021), pp. 212-216, Virtual Conference (Linz, Austria), Nov. 29-Dec. 1, 2021. (short paper)
• Toshiyuki Hirakata, Toshiyuki Amagasa,
  "A Dynamic Load-balancing Method for Distributed RDF Stream Processing Systems",
  The 23rd International Conference on Information Integration and Web-based Applications & Services (iiWAS 2021), pp. 410-414, Virtual Conference (Linz, Austria), Nov. 29-Dec. 1, 2021. (short paper)
• Shunta Ishihara, Chiemi Watanabe, Toshiyuki Amagasa,
  "Supporting Insertion in an Encrypted Multi-Maps with Volume Hiding using Trusted Execution Environment",
  DOLAP 2022: The 23rd International Workshop on Design, Optimization, Languages and Analytical Processing of Big Data (DOLAP) co-located with EDBT/ICDT 2021, pp. 61-70, Virtual Conference (Nicosia, Cyprus), March 23, 2021.

2020

Journal

• Savong Bou, Hiroyuki Kitagawa, and Toshiyuki Amagasa,
  "L-BiX: Incremental Sliding-Window Aggregation over Data Streams Using Linear Bidirectional Aggregating Indexes",
  Knowledge and Information Systems, Vol. 62, pp. 3107-3131, February 2020, Springer. (Impact Factor 2.936)
  DOI: https://doi.org/10.1007/s10115-020-01444-5
  
• Kotaro Yamazaki, Shohei Matsugu, Hiroaki Shiokawa, Hiroyuki Kitagawa,
  "Fast and Parallel RankClus Algorithm based on Dynamic Rank Score Tracking,"
  Journal of Information Processing (Transaction of Databases), Vol.28, July 2020.
  
• Salman Ahmed Shaikh and Hiroyuki Kitagawa,
  "StreamingCube: Seamless Integration of Stream Processing and OLAP Analysis",
  IEEE Access, Vol. 8, pp. 104632-104649, June 2020,
  DOI: https://doi.org/10.1109/ACCESS.2020.2999572 (Impact Factor 4.098).
  
• Yuyang Dong, Chuan Xiao, Hanxiong Chen, Jefferey Xu Yu, Kunihiro Takeoka, Masafumi Oyamada, and Hiroyuki Kitagawa,
  "Continuous Top-k Spatial-Keyword Search on Dynamic Objects",
  The VLDB Journal, Springer, September 2020. (Impact Factor 3.508)
  DOI: https://doi.org/10.1007/s00778-020-00627-4

Conference

• Natsuki Ogino, Kazumasa Horie, and Hiroyuki Kitagawa,
  "Semantic Image Synthesis of Complicated Objects using Line-drawing",
  Proc. 2020 RISP International Workshop on Nonlinear Circuits, Communications and Signal Processing (NCSP'20), No. 1PM1-1-3, pp. 373 - 376, Honolulu, Hawaii, February 28 - March 2, 2020.
  
• Kenji Mori, Naoko Okubo, Yasushi Ueda, Masafumi Katahira, Toshiyuki Amagasa,
  Toward Latent Knowledge Extraction Based on the Correlation of Heterogeneous Text Data Related to Space System Development,
  Proc. REFSQ-2020 Workshops, 9 pages, Pisa, Italy, March 2020.
  http://ceur-ws.org/Vol-2584/NLP4RE-paper2.pdf
• Kenji Mori, Naoko Okubo, Yasushi Ueda, Masafumi Katahira, Toshiyuki Amagasa,
  Supporting viewpoints to review the lack of requirements in space systems with machine learning,
  Proc. IEEE/ACM 15th International Symposium on Software Engineering for Adaptive and Self-Managing Systems (SEAMS 2020), pp. 38-44, June 2020.
  DOI: https://doi.org/10.1145/3387939.3391610
• Hiroaki Shiokawa, Tomokatsu Takahashi,
  "DSCAN: Distributed Structural Graph Clustering for Billion-edge Graphs",
  In Proceedings of the 31st International Conference on Database and Expert Systems Applications (DEXA2020) , September 2020. (Full paper) (Acceptance ratio 20%).
• Shohei Matsugu, Hiroaki Shiokawa, Hiroyuki Kitagawa,
  "Fast and Accurate Community Search Algorithm for Attributed Graphs",
  In Proceedings of the 31st International Conference on Database and Expert Systems Applications (DEXA2020) , September 2020. (Full paper) (Acceptance ratio 20%).
• Junya Yanagisawa, Hiroaki Shiokawa,
  "Fast One-to-Many Reliability Estimation for Uncertain Graphs",
  In Proceedings of the 31st International Conference on Database and Expert Systems Applications (DEXA2020) , September 2020. (Full paper) (Acceptance ratio 20%).
• Shuya Suganami, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "Accelerating all 5-vertex subgraphs counting using GPUs",
  In Proceedings of the 31st International Conference on Database and Expert Systems Applications (DEXA2020) , September 2020. (FUll paper) (Acceptance ratio 20%).
• Salman Ahmed Shaikh, Komal Mariam, Hiroyuki Kitagawa, and Kyoung-Sook Kim,
  "GeoFlink: A Distributed and Scalable Framework for the Real-time Processing of Spatial Streams",
  Proc. 29th ACM International Conference on Information and Knowledge Management (CIKM2020) (Resource Track), October 19-23, 2020. (Acceptance ratio 32.6%)
• Junhu Wang, Shikha Anirban, Toshiyuki Amagasa, Hiroaki Shiokawa, Zhiguo Gong, Md. Saiful Islam,
  A Hybrid Index for Distance Queries,
  Proc. International Conference on Web Information Systems Engineering (WISE 2020), pp. 227-241, October, 2020.
  DOI: https://doi.org/10.1007/978-3-030-62005-9_17
• Taro Aso, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "Relation-oriented faceted search method for knowledge bases",
  In Proceedings of the 22nd International Conference on Information Integration and Web-based Applications & Services (iiWAS2020), November 30 - December 2, 2020.

2019

Journal

• Savong Bou, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "Scalable Keyword Search over Relational Data Streams by Aggressive Candidate Network Consolidation",
  Information Systems - ELSEVIER, Vol. 81, Iss. C, pp. 117-135, March 2019, (Impact Factor 2.551)
  DOI: https://doi.org/10.1016/j.is.2018.12.004
• Hiroyoshi Ito, Takahiro Komamizu, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "Detecting Communities and Correlated Attribute Clusters on Multi-Attributed Graphs",
  IEICE Transactions on Information and Systems, VOL.E102-D, NO.4,pp.810-820, APRIL 2019.
  
• Kazuha Ashino, Kenta Sugano, Toshiyuki Amagasa,and Bei-Wen Ying,
  "Predicting the decision making chemicals used for bacterial growth",
  Scientific Reports, Vol. 9, No. 7251, May 2019.
  
• Masato Yamabe, Kazumasa Horie, Hiroaki Shiokawa, Hiromasa Funato, Masashi Yanagisawa and Hiroyuki Kitagawa,
  "MC-SleepNet: Large-scale Sleep Stage Scoring in Mice by Deep Neural Networks",
  Scientific Reports, Vol. 9, No. 15793, Oct. 2019. (Impact Factor 4.011)
  DOI: https://doi.org/10.1038/s41598-019-51269-8
• Hiroaki Shiokawa, Yasunori Futamura,
  "Efficient Vector Partitioning Algorithm for Modularity-based Graph Clustering," Journal of Data Intelligence,
  Vol.1, No.2, pp.101-123, June 2019.
• Kotaro Yamazaki, Tomoki Sato, Hiroaki Shiokawa, Hiroyuki Kitagawa,
  "Fast and Parallel Ranking-based Clustering for Heterogeneous Graphs,"
  Journal of Data Intelligence, Vol.1, No.2, pp.137-158, June 2019.
• Hiroaki Shiokawa, Tomohiro Matsushita, Hiroyuki Kitagawa,
  "Fast Affinity Propagation by Cell-based Indexing,"
  Journal of Data Intelligence, Vol.1, No.1, pp.55-74, April 2019.

Conference

• Sang Le, Yuyang Dong, Hanxiong Chen, Kazutaka Furuse,
  "Balanced Nearest Neighborhood Query in Spatial Database",
  Proc. 6th IEEE International Conference on Big Data and Smart Computing (BigComp 2019) (Short Paper), 4 pages, Kyoto, Japan, February 27th - March 2nd, 2019.
  DOI: 10.1109/BIGCOMP.2019.8679425
• Hiroyoshi Ito, Toshiyuki Amagasa, (Best Paper Award Runner-up)
  "An Optimization Scheme for Non-negative Matrix Factorization under Probability Constraints",
  Proc. 6th IEEE International Conference on Big Data and Smart Computing (BigComp 2019), 8 pages, Kyoto, Japan, February 27th - March 2nd, 2019.
  DOI: 10.1109/BIGCOMP.2019.8679467
• Savong Bou, Hiroaki Shiokawa, Yasuhiro Hayase, Hiroyuki Kitagawa,
  "StreamingCube-based Analytical Framework for Environmental Data Analysis",
  Proc. 1st International Workshop on Big data, cloud, and IoT technologies for smart cities (IWBigDataCity 2019), co-located with 6th IEEE International Conference on Big Data and Smart Computing (BigComp 2019), 8 pages, Kyoto, Japan, February 27th - March 2nd 2019.
  DOI: 10.1109/BIGCOMP.2019.8679149
• Yuki Yasusaka, Chiemi Watanabe, Hiroyuki Kitagawa,
  "Privacy-Preserving Pre-Consensus Protocol for Blockchains",
  Proc. 1st International Workshop on Big data, cloud, and IoT technologies for smart cities (IWBigDataCity 2019), co-located with 6th IEEE International Conference on Big Data and Smart Computing (BigComp 2019), 8 pages, Kyoto, Japan, February 27th - March 2nd 2019.
  DOI: 10.1109/BIGCOMP.2019.8679137
• Yuyang Dong, Hanxiong Chen, Hiroyuki Kitagawa,
  "Continuous Search on Dynamic Spatial Keyword Objects",
  Proc. 35th IEEE International Conference on Data Engineering (ICDE 2019) (Short Paper), pp. 1578-1581, Macau SAR, China, April, 2019.
  DOI: 10.1109/ICDE.2019.00146
• Hiroaki Shiokawa, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "Scaling Fine-grained Modularity Clustering for Massive Graphs",
  In Proceedings of the 28th International Joint Conference on Artificial Intelligence (IJCAI2019), pp.xxx-xxx, Macao, China, August 2019. (Full paper) (Acceptance ratio 13.67%)
• Katia Bourahmoune, Toshiyuki Amagasa,
  "AI-powered Posture Training: Application of Machine Learning in Sitting Posture Recognition Using the LifeChair Smart Cushion",
  In Proceedings of the 28th International Joint Conference on Artificial Intelligence (IJCAI2019), pp.xxx-xxx, Macao, China, August 2019. (Full paper) (Acceptance ratio 13.67%)
• Kento Miura, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "Accelerating Regular Path Queries using FPGA",
  Tenth International Workshop on Accelerating Analytics and Data Management Systems Using Modern Processor and Storage Architectures, in conjunction with VLDB (ADMS2019) , Los Angeles, United States, August 26, 2019.
• Yuya Nasu, Hiroyuki Kitagawa, Kosuke Nakabasami,
  "Efficient Row Pattern Matching using Pattern Hierarchies for Sequence OLAP",
  Proc. 21st International Conference on Big Data Analytics and Knowledge Discovery (DaWak2019), pp. 89-104,
  Linz, Austria, August 26-29, 2019 (Acceptance rate 20%).
• Kosuke Nakabasami, Hiroyuki Kitagawa, Yuya Nasu,
  "Optimization of Row Pattern Matching over Sequence Data in Spark SQL",
  Proc. 30th International Conference on Database and Expert Systems Applications (DEXA2019), pp. 3-17,
  Linz, Austria, August 26-29, 2019.
• Happy Buzaaba, Toshiyuki Amagasa,
  "A modular approach for efficient simple question answering over knowledge base",
  Proc. 30th International Conference on Database and Expert Systems Applications (DEXA2019), pp. 237-246,
  Linz, Austria, August 26-29, 2019.
• Yuki Sumiya, Kazumasa Horie, Hiroaki Shiokawa, Hiroyuki Kitagawa, (Best Presentation Award)
  "NR-GAN: Noise Reduction GANfor Mice Electroencephalogram Signals",
  Proc. 4th International Conference on Biomedical Imaging, Signal Processing (ICBSP 2019), pp. 94-101, Nagoya, Japan, October 17-19 2019.
  
• Shohei Matsugu, Hiroaki Shiokawa, Hiroyuki Kitagawa,
  "Flexible Community Search Algorithm on Attributed Graphs",
  In Proceedings of the 21st International Conference on Information Integration and Web-based Applications and Services (iiWAS2019), pp.103-109, Munich, Germany, December 2019. (Acceptance rate 48%)
  
• Kotaro Yamazaki, Shohei Matsugu, Hiroaki Shiokawa, Hiroyuki Kitagawa,
  "Fast RankClus Algorithm via Dynamic Rank Score Tracking on Bi-type Information Networks",
  In Proceedings of the 21st International Conference on Information Integration and Web-based Applications and Services (iiWAS2019), pp.110-117, Munich, Germany, December 2019. (Acceptance rate 48%)
  
• Shintaro Kurimoto, Yasuhiro Hayase, Hiroshi Yonai, Hiroyoshi Ito, Hiroyuki Kitagawa,
  "Class Name Recommendation based on Graph Embedding of Program Elements",
  In Proceedings of the 26th Asia-Pacific Software Engineering Conference (APSEC2019) (Full Paper), pp. 498-505, Putrajaya, Malaysia, December 2-5 2019 (Acceptance rate 34.7%).
  
• Hiroshi Yonai, Yasuhiro Hayase, Hiroyuki Kitagawa,
  "Mercem: Method Name Recommendation Based on Call Graph Embedding",
  In Proceedings of the 26th Asia-Pacific Software Engineering Conference (APSEC2019) (Full Paper), pp. 134-141, Putrajaya, Malaysia, December 2-5 2019 (Acceprance rate 34.7%).
  
• Masafumi Hayashi, Masaki Kobayashi, Masaki Matsubara, Toshiyuki Amagasa, Atsuyuki Morishima,
  "Incentive Design for Crowdsourced Development of Selective AI for Human and Machine Data Processing: A Case Study",
  Proc. 3rd IEEE Workshop on Human-in-the-loop Methods and Human Machine Collaboration in BigData (IEEE HMData 2019), co-located with IEEE Bigdata 2019, pp. 4596-4601, Los Angeles, USA, December 9, 2019.
  

Poster

• Mirai Niki, Yoshiki Yamaguchi and Toshiyuki Amagasa,
  "FPGA-based SPARQL query acceleration",
  In Proceedings of Asia Pacific Conference on Robot IoT System Development and Platform (APRIS 2019), 2 pages, Thailand, November 1-4, 2019.
  

2018

• Yuyang Dong, Hanxiong Chen, Kazutaka Furuse, Hiroyuki Kitagawa,
  "Efficient Methods for Aggregate Reverse Rank Queries",
  IEICE Transactions on Information and Systems. 101 (4), 1012-1020.
• Yuta Kusamura, Toshiyuki Amagasa, Hiroyuki Kitagawa, and Yusuke Kozawa,
  "Efficient Position Estimation based on GPU-Accelerated Content-based Image Retrieval",
  Journal of Mobile Multimedia (JMM), Vol.14, Iss.2, pp.197-230, April 2018.
• Masafumi Oyamada, Jianquan Liu, Shinji Ito, Kazuyo Narita, Takuya Araki, Hiroyuki Kitagawa,
  "Compressed Vector Set: A Fast and Space-Efficient Data Mining Framework",
  Journal of Information Processing , Vol.26, pp. 416-426, 2018.
  DOI: https://doi.org/10.2197/ipsjjip.26.416
• Salman Ahmed Shaikh, Yousuke Watanabe, Yan Wang, and Hiroyuki Kitagawa,
  "Smart Scheme: An Efficient Query Execution Scheme for Event-driven Stream Processing",
  Knowledge and Information Systems, Springer , April 2018 (Published online) (Impact Factor 2.004).
• Yuyang Dong, Hanxiong Chen, Jeffery Xu Yu, Kazutaka Furuse, Hiroyuki Kitagawa,
  "Weighted Aggregate Reverse Rank Queries",
  ACM Transactions on Spatial Algorithms and Systems (TSAS) Volume 4 Issue 2, 5:1-5:23, 2018.
• Yuyang Dong, Hanxiong Chen, Kazutaka Furuse, Hiroyuki kitagawa,
  "Bound-and-filter Framework for Aggregate Reverse Rank Queries",
  Transactions on Large-Scale Data and Knowledge-Centered Systems. Special Issue on Database and Expert Systems Applications (TLDKS) XXXVIII, pp.1-26, 2018.
• Eiichi Iwamoto, Masaki Matsubara, Chihiro Ota, Tsutomu Terada, Satoshi Nakamura, Hiroyuki Kitagawa, and Atsuyuki Morishima,
  "Passerby Crowdsourcing: Workers' Behavior and Data Quality Management",
  Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT) pp.169:1--169:20, 2018.
• Keitaro Kume, Toshiyuki Amagasa, Tetsuo Hashimoto, Hiroyuki Kitagawa,
  "NommPred: Prediction of Mitochondrial and Mitochondrion-Related Organelle Proteins of Nonmodel Organisms",
  Evolutionary Bioinformatics, Vol.14, December 2018 (Published online). (Impact Factor 1.877).
  
• Hiroyoshi Ito, Takahiro Komamizu, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "Network-Word Embedding for Dynamic Text Attributed Networks",
  Proc. Sixth International Workshop on Semantic Computing for Social Networks and Organization Science with Twelfth IEEE ICSC (SCSN 2018), pp.334-339, Laguna Hills, California USA, January 31-Feburary 2, 2018.
• Hiroyoshi Ito, Takahiro Komamizu, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "Community Detection and Correlated Attribute Cluster Analysis on Multi-Attributed Graphs",
  Proc. 2nd International Workshop on Data Analytics Solutions for Real-Life APplications with 21st EDBT/ICDT Joint Conference (DARLI-AP 2018), pp.2-9, Vienna, Austria, March 26-29, 2018.
• Shuta Nakamae, Wataru Sakamoto, Tetsuya Negishi, Shuhei Goto, Buntarou Shizuki, Chiemi Watanabe, and Toshiyuki Amagasa,
  "A Development of Participatory Sensing System for Foreign Visitors in PBL",
  10th Asian Conference on Intelligent Information and Database Systems (ACIIDS 2018) , Dong Hoi City, Vietnam, March 19-21, 2018.
• Hiroaki Shiokawa, Tomokatsu Takahashi, Hiroyuki Kitagawa,
  "ScaleSCAN: Scalable Density-based Graph Clusterign",
  Proc. 29th International Conference on Database and Expert Systems Applications (DEXA 2018), pp.18-34, Regensburg, Germany, September 2018. (Acceptance ratio 21%).
• Kenta Sugano, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "Approximate Set Similarity Join using Many-core Processors",
  Proc. 29th International Conference on Database and Expert Systems Applications (DEXA 2018)(Short Paper), pp.214-222, Regensburg, Germany, September 2018. (Acceptance ratio 32%).
• Kotaro Yamazaki, Tomoki Sato, Hiroaki Shiokawa, Hiroyuki Kitagawa,
  "Fast Algorithm for Integrating Clustering with Ranking on Heterogeneous Graphs",
  Proc. 20th International Conference on Information Integration and Web-based Applications and Services (iiWAS2018), Yogyakarta, Indonesia, November 2018.
• Tomohiro Matsushita, Hiroaki Shiokawa, Hiroyuki Kitagawa,
  "C-AP: Cell-based Algorithm for Efficient Affinity Propagation",
  Proc. 20th International Conference on Information Integration and Web-based Applications and Services (iiWAS2018), Yogyakarta, Indonesia, November 2018.
• Hiroaki Shiokawa, Yasunori Futamura,
  "Graph Clustering via Cohesiveness-aware Vector Partitioning",
  Proc. 20th International Conference on Information Integration and Web-based Applications and Services (iiWAS2018), Yogyakarta, Indonesia, November 2018.
• Ken Mizusawa, Keishi Tajima, Masaki Matsubara, Toshiyuki Amagasa, Atsuyuki Morishima,
  "Efficient Pipeline Processing of Crowdsourcing Workflows",
  Proc. 27th ACM International Conference on Information and Knowledge Management (CIKM 2018) (short Paper), pp.1559-1562, Torino, Italy, October 22-26, 2018. (Acceptance ratio 23%).
• Yusuke Suzuki, Masaki Matsubara, Keishi Tajima, Toshiyuki Amagasa, Atsuyuki Morishima,
  "A Cache-based Approach to Dynamic Switching between Different Dataflows in Crowdsourcing",
  In Proceedings of The Second IEEE Workshop on Human-in-the-loop Methods and Human Machine Collaboration in BigData (IEEE HMData2018), pp.3551-3553, Seattle, USA, December 10-13, 2018.
• Tomoki Sato, Hiroaki Shiokawa, Yuto Yamaguchi, Hiroyuki Kitagawa,
  "FORank: Fast ObjectRank for Large Heterogeneous Graphs" (poster),
  In Companion Proceedings of the The Web Conference 2018 (WWW 2018), pp.103-104, Lyon, France, April 23-27, 2018.

2017

• Makoto Onizuka, Toshimasa Fujimori, Hiroaki Shiokawa,
  "Graph Partitioning for Distributed Graph Processing",
  Data Science and Engineering, Springer, 2017.
• Yasuhiro Fujiwara, Makoto Nakatsuji, Hiroaki Shiokawa, Takeshi Mishima, Makoto Onizuka,
  "Fast Ad-hoc Search Algorithm for Personalized PageRank",
  IEICE Transactions, Vol.E 100-D, No.4, pp., April, 2017.
• Takahiro Komamizu, Sayami Okumura, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "FORK: Feedback-aware ObjectRank-based Keyword Search over Linked Data",
  Proc. 13th Asia Information Retrieval Societies Conference (AIRS 2017) , pp.58-70, Jeju island, Korea, November 22-24, 2017.
• Saki Ueda, Yuto Yamaguchi, Hiroyuki Kitagawa,
  "Collecting Non-Geotagged Local Tweets via Bandit Algorithms",
  Proc. 26th ACM International Conference on Information and Knowledge Management (CIKM 2017) (Short Paper), pp.2331-2334, Singapore, November 6-10, 2017 (Acceptance rate 30%).
• Salman Ahmed Shaikh and Hiroyuki Kitagawa,
  "StreamingCube: A Unified Framework for Stream Processing and OLAP Analysis",
  Proc. 26th ACM International Conference on Information and Knowledge Management (CIKM 2017) (Demo Paper), pp.2527-2530, Singapore, November 6-10, 2017 (Acceptance rate 37.5%).
• Yusuke Kozawa, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "GPU-Accelerated Graph Clustering via Parallel Label Propagation",
  Proc. 26th ACM International Conference on Information and Knowledge Management (CIKM 2017), pp. 567-576, Singapore, November 6-10, 2017 (Acceptance rate 21%).
• Tomokatsu Takahashi, Hiroaki Shiokawa, Hiroyuki Kitagawa,
  "SCAN-XP: Parallel Structural Graph Clustering Algorithm on Intel Xeon Phi Coprocessors",
  Proc. 2nd ACM SIGMOD Workshop on Network Data Analytics (NDA 2017), pp. 6:1-6:7, Chicago, IL, USA, May 19, 2017.
• Yuta Suzuki, Makito Sato, Hiroaki Shiokawa, Masashi Yanagisawa, Hiroyuki Kitagawa,
  "MASC: Automatic Sleep Stage Classification Based on Brain and Myoelectric Signals,"
  Proc. 33rd IEEE International Conference on Data Engineering Workshops, (ICDE Workshops 2017), pp. 1489-1496, San Diego, CA, USA, April 19-22, 2017.
• Yuyang Dong, Hanxiong Chen, Jeffrey Xu Yu, Kazutaka Furuse, Hiroyuki Kitagawa,
  "Grid-Index Algorithm for Reverse Rank Queries",
  Proc. 20th International Conference on Extending Database Technology, (EDBT 2017), pp.306-317 ,Venice, Italy, March 21-24, 2017.
• Salman Ahmed Shaikh and Hiroyuki Kitagawa,
  "Approximate OLAP on Sustained Data Streams",
  Proc. 22nd International Conference on Database Systems for Advanced Applications (DASFAA 2017), pp.102-118, Suzhou, China, March 27-30, 2017. (Acceptance rate 24%)
• Hiroyuki Kitagawa (Keynote Talk),
  "Real World Big Data Integration and Analysis: Research Issues and Challenges",
  ACM International Conference on Ubiquitous Information Management and Communication (ACM IMCOM 2017), January 5, Beppu, Japan.
• Takahiro Komamizu, Yasuhiro Hayase, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "Exploring Identical Users on GitHub and Stack Overflow",
  Proc. the 29th International Conference on Software Engineering and Knowledge Engineering (SEKE 2017), pp.584-589, Wyndham Pittsburgh University Center, Pittsburgh, USA, July 5-7, 2017
• Yuyang Dong, Hanxiong Chen, Kazutaka Furuse, Hiroyuki Kitagawa,
  "Efficient Processing of Aggregate Reverse Rank Queries",
  Proc. 28th International Conference on Database and Expert Systems Applications (DEXA 2017), pp.159-166, Lyon, France, August 28-31, 2017 (Acceptance Rate 24%).
• Takahito Kaiho, Wen-jie Lu, Toshiyuki Amagasa, and Jun Sakuma,
  "Towards Privacy-preserving Record Linkage with Record-wise Linkage Policy",
  Proc. 28th International Conference on Database and Expert Systems Applications (DEXA 2017), pp.233-248, Lyon, France, August 28-31, 2017 (Acceptance Rate 22%).
• Chihiro Sakazume, Hiroyuki Kitagawa, Toshiyuki Amagasa, (Best Paper Award)
  "DIO: Efficient Interactive Outlier Analysis over Dynamic Datasets",
  Proc. 12th International Conference on Digital Information Management (ICDIM 2017), pp. 234-241, Fukuoka, Japan, September 12-14, 2017 (Acceptance Rate 32%).
• Takahiro Komamizu, Toshiyuki Amagasa, Salman Ahmed Shaikh, Hiroaki Shiokawa, Hiroyuki Kitagawa,
  "SOLA: Stream OLAP-based Analytical Framework for Roadway Maintenance",
  Proc. International Workshop on Social and Big Data in Digital Ecosystems (SBDDE 2017), pp.35-42, Bangkok, Thailand, November 7-10, 2017.
• Takahiro Komamizu, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "CROISSANT: Centralized Relational Interface for Web-scale SPARQL Endpoints",
  Proc. 19th International Conference on Information Integration and Web-based Applications & Services (iiWAS2017) (Short Paper), pp.284-288, Salzburg, Austria, December 4-6, 2017.
• Saki Nagaki, Hiroyuki Kitagawa,
  "Recency-based Candidate Selection for Efficient Entity Linking",
  Proc. 19th International Conference on Information Integration and Web-based Applications & Services (iiWAS2017), pp.405-414, Salzburg, Austria, December 4-6, 2017. (Acceptance Rate 40%).
• Kento Akiyama, Chisato Shinozuka, Chiemi Watanabe, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "An Index-based Secure Query Processing Scheme for Outsourced Databases",
  Proc. 19th International Conference on Information Integration and Web-based Applications & Services (iiWAS2017), pp.215-223, Salzburg, Austria, December 4-6, 2017. (Acceptance Rate 40%).
• Mateus S. H. Cruz, Toshiyuki Amagasa, Chiemi Watanabe, Wenjie Lu and Hiroyuki Kitagawa
  "Secure Similarity Joins Using Fully Homomorphic Encryption",
  Proc. 19th International Conference on Information Integration and Web-based Applications & Services (iiWAS2017), pp.224-233, Salzburg, Austria, December 4-6, 2017. (Acceptance Rate 40%).
• Katsumi Kumai, Jianwei Zhang, Yuhki Shiraishi, Daisuke Wakatsuki, Hiroyuki Kitagawa, Atsuyuki Morishima
  "Group Rotation Management in Real-Time Crowdsourcing",
  Proc. 19th International Conference on Information Integration and Web-based Applications & Services (iiWAS2017), pp.23-31, Salzburg, Austria, December 4-6, 2017. (Acceptance Rate 40%).
• Yuta Kusamura, Toshiyuki Amagasa, Hiroyuki Kitagawa and Yusuke Kozawa,
  "Efficient Content-based Image Retrieval for Position Estimation on GPU",
  Proc. the 15th International Conference on Advances in Mobile Computing & Multimedia (MoMM 2017), pp.58-66, Salzburg, Austria, December 4-6, 2017. (Acceptance rate 40 %).
• Salman Ahmed Shaikh and Hiroyuki Kitagawa,
  "Smart Distributed Query Execution over Data Streams",
  Proc. 2nd Workshop on Real-time and Stream Processing in Big Data, co-located with the IEEE International Conference on Big Data, pp.2326-2331, Boston, MA, USA, December 2017.
• Takahiro Komamizu, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "Implicit Order Join: Joining Log Data with Property Data by Discovering Implicit Order-oriented Keys with Human Assistance",
  Proc. The First IEEE Workshop on Human-Machine Collaboration in BigData (HMData2017), co-located with IEEE Big data 2017, pp.4400-4406, Boston, MA, USA, December 11-14, 2017.
• Takahiro Komamizu, Jin Nakazawa, Toshiyuki Amagasa, Hiroyuki Kitagawa, Hideyuki Tokuda,
  "Analytical Toolbox for Smart City Applications: Garbage Collection Log Use Case",
  Proc. 3rd International Workshop on Smart Cities: People, Technology, and Data (IWSC 2017), co-located with IEEE Big Data 2017, pp.4105-4110, Boston, MA, USA, December 11-14, 2017.

2016

• Ryosuke Koyanagi, Ryo Furukawa, Tsubasa Takahashi, Takuya Mori, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "A Scheme for Fast k-Concealment Anonymization",
  IEICE Transactions on Information and Systems, Vol.E99-D, No.4, pp. 1000-1009, Apr. 2016.
• Atsuyuki Morishima, Shun Fukusumi, Hiroyuki Kitagawa,
  "CyLog/Game Aspect: An Approach to Separation of Concerns in Crowdsourced Data Management",
  Information Systems, Volume 62, Pages 170-184, December 2016.
• Takahiro Komamizu, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "H-SPOOL: A SPARQL-based ETL Framework for OLAP over Linked Data with Dimension Hierarchy Extraction",
  International Journal of Web Information Systems (IJWIS), Vol.12 , Iss.3 , pp.359-378, 2016.
• Mateus S. H. Cruz, Yusuke Kozawa, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "Accelerating Set Similarity Joins Using GPUs",
  Transactions on Large-Scale Data and Knowledge-Centered Systems XXVIII: Special Issue on Database and Expert Systems Applications (TLDKS), pp. 1-22, 2016.
• Yasuhiro Fujiwara, Yasutoshi Ida, Hiroaki Shiokawa, Sotetsu Iwamura,
  "Fast Lasso Algorithm via Selective Coordinate Descent",
  Proc. 30th AAAI Conference on Artificial Intelligence (AAAI 2016), pp. 1561-1567, Phoenix, Arizona, USA, February, 2016.
• Salman Ahmed Shaikh, Yousuke Watanabe, Yan Wang, Hiroyuki Kitagawa,
  "Smart Query Execution for Event-driven Stream Processing",
  Proc. 2nd IEEE International Conference on Multimedia Big Data (IEEE BigMM 2016), pp. 97-104, Taipei, Taiwan, April 20-22, 2016.
• Kento Kawai, Hiroyuki Kitagawa,
  "Collaborative Filtering with Implicit Feedbacks by Discounting Positive Feedbacks",
  Proc. 2nd IEEE International Conference on Multimedia Big Data (IEEE BigMM 2016), pp. 41-48, Taipei, Taiwan, April 20-22, 2016.
• Junya Arai, Hiroaki Shiokawa, Takeshi Yamamuro, Makoto Onizuka, Sotetsu Iwamura,
  "Rabbit Order: Just-in-time Parallel Reordering for Fast Graph Analysis",
  Proc. 30th IEEE International Parallel & Distributed Processing Symposium (IPDPS 2016), pp.22-31, Chicago, Illinois, USA, May 23-27, 2016.
• Yuto Yamaguchi, Christos Faloutsos, Hiroyuki Kitagawa,
  "CAMLP: Confidence-Aware Modulated Label Propagation",
  SIAM International Conference on Data Mining (SDM 2016), pp.513-521, Miami, Florida, USA, May 5-7, 2016.
• Hiroyoshi Ito, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "Detecting Topic Evolutions in Bibliographic Databases Exploiting Citations",
  Proc. 26th International Conference on Information Modelling and Knowledge Bases (EJC 2016), pp.489-504, Tampere, Finland, June 6-10, 2016.
• Takahiro Komamizu, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "Visual Spatial-OLAP for Vehicle Recorder Data on Micro-sized Electric Vehicles",
  Proc. 20th International Database Engineering & Applications Symposium (IDEAS 2016), pp.358-363, Montreal, QC, Canada, July 11-13, 2016 (short paper).
• Savong Bou, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "An Improved Method of Keyword Search over Relational Data Streams by Aggressive Candidate Network Consolidation",
  Proc. 27th International Conference on Database and Expert Systems Applications (DEXA 2016), pp. 336-351, Porto, Portugal, September 5-8, 2016.
• Salman Ahmed Shaikh, Dong Chao, Kazuya Nishimura, Hiroyuki Kitagawa,
  "Incremental Continuous Query Processing over Streams and Relations with Isolation Guarantees",
  Proc. 27th International Conference on Database and Expert Systems Applications (DEXA 2016), pp.321-335, Porto, Portugal, September 5-8, 2016.
• Yuyang Dong, Hanxiong Chen, Kazutaka Furuse, Hiroyuki Kitagawa, (Best Paper Award)
  "Aggregate Reverse Rank Queries",
  Proc. 27th International Conference on Database and Expert Systems Applications (DEXA 2016), pp.87-101, Porto, Portugal, September 5-8, 2016.
• Yuki Nishimura, Toshiyuki Amagasa, Yuji Inagaki, Tetsuo Hashimoto, and Hiroyuki Kitagawa,
  "A system for supporting phylogenetic analyses over alignments of next generation sequence data,"
  The 10th International Conference on Complex, Intelligent, and Software Intensive Systems (CISIS-2016), pp.230-237, Fukuoka, Japan, July 6-8, 2016.
• Yuta Kusamura, Yusuke Kozawa, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "GPU Acceleration of Content-based Image Retrieval based on SIFT Descriptors",
  Proc. the 5th International Workshop on Advances in Data Engineering and Mobile Computing in conjunction with NBiS2016 (DEMoC 2016), pp.342-347, Ostrava, Czech Republic, September 7-9, 2016.
• Hirotoshi Cho, Hiroaki Shiokawa and Hiroyuki Kitagawa,
  "JsFlow: Integration of Massive Streams and Batches via JSON-based Dataflow Algebra" ,
  Proc. 19th International Conference on Network-Based Information Systems (NBiS 2016), pp.188-195, Ostrava, Czech Republic, September 7-9, 2016.
• Saki Nagaki, Yuto Yamaguchi, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Local Attention Analysis and Prediction of Online News Articles in Twitter",
  International Workshop On Mobile Ubiquitous Systems, Infrastructures, Communications, And Applications (MUSICAL 2016), pp.131-136, Hiroshima, Japan, November 28, 2016.
• Takahiro Komamizu, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Interleaving Clustering of Classes and Properties for Disambiguating Linked Data",
  Proc. the 18th International Conference on Asia-Pacific Digital Libraries (ICADL 2016), pp.251-256, Tsukuba, Ibaraki, Japan, December 5-9, 2016 (short paper)
• Takahiro Komamizu, Toshiyuki Amagasa, Salman Ahmed Shaikh, Hiroaki Shiokawa and Hiroyuki Kitagawa,
  "Towards Real-time Analysis of Smart City Data: A Case Study on City Facility Utilizations",
  Proc. the 14th IEEE International Conference on Smart City (SmartCity 2016), pp.1357-1364, Sydney, Australia, December 12-14, 2016.
• Katsumi Kumai, Yuhki Shiraishi, Jianwei Zhang, Hiroyuki Kitagawa, Atsuyuki Morishima,
  "Group Rotation Type Crowdsourcing",
  Proc.the Fourth AAAI Conference on Human Computation and Crowdsourcing (HCOMP 2016), Austin, TX, USA, October 30 - November 3, 2016.
• Hiroki Fukuda, Yasuhiro Hayase, Hiroyuki Kitagawa
  "Towards Interactive Phrase Suggestion for Naming Classes" (poster)
  Proc. 23rd IEEE International Conference on Software Analysis, Evolution, and Reengineering (SANER 2016), Osaka, Japan, March 15, 2016.

2015

• Takahiro Komamizu, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Facet-value Extraction Scheme from Textual Contents in XML Data",
  International Journal of Web Information Systems (IJWIS), pp.270-290, 2015.
• Savong Bou, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Path-based Keyword Search over XML Streams",
  International Journal of Web Information Systems (IJWIS), Vol. 11, Iss. 3, pp.347-369, 2015.
• Yuto Yamaguchi, Christos Faloutsos, and Hiroyuki Kitagawa,
  "OMNI-Prop: Seamless Node Classification on Arbitrary Label Correlation",
  Proc. 29th AAAI Conference on Artificial Intelligence (AAAI 2015), pp. 3122-3128, Austin, USA, January 25-29, 2015.
• Yuto Yamaguchi, Christos Faloutsos, and Hiroyuki Kitagawa,
  "SocNL: Bayesian Label Propagation with Confidence"
  Proc. 19th Pacific-Asia Conference on Knowledge Discovery and Data mining (PAKDD 2015), pp. 633-645, Ho Chi Min City, Vietnam, May 19-22, 2015.
• Yuto Yamaguchi, Mitsuo Yoshida, Christos Faloutsos, and Hiroyuki Kitagawa,
  "Patterns in Interactive Tagging Networks"
  Proc. 9th International AAAI Conference on Web and Social Media (ICWSM2015), pp. 512-522, Oxford, UK, May 26-29, 2015.
• Shun Fukusumi, Atsuyuki Morishima, and Hiroyuki Kitagawa, (Best Paper Award)
  "Game Aspect: An Approach to Separation of Concerns in Crowdsourced Data Management",
  Proc. 27th International Conference on Advanced Information Systems Engineering (CAiSE2015), pp. 3-19, Stockholm, Sweden, June 8-12, 2015.
• Hao Ye, Hiroyuki Kitagawa, and Jun Xiao,
  "Continuous Angle-based Outlier Detection on High-dimensional Data Streams",
  Proc. the 19th International Database Engineering & Applications Symposium (IDEAS 2015), pp. 162-167, Yokohama, Japan, July 13-15, 2015.
• Alceu Ferraz Costa, Yuto Yamaguchi, Agma Juci Machado Traina, Caetano Traina Jr., and Christos Faloutsos,
  "RSC: Mining and Modeling Temporal Activity in Social Media",
  The 21st SIGKDD Conference on Knowledge Discovery and Data Mining (KDD 2015), pp. 269-278, Sydney, Australia, August 10-13, 2015.
• Yasuhiro Hayase, Tetsuya Kanda, Takashi Ishio,
  "Estimating Product Evolution Graph using Kolmogorov Complexity",
  14th International Workshop on Principles of Software Evolution (IWPSE 2015), pp.66-72, Bergamo, Itary, August 30, 2015.
• Yusuke Kozawa, Fumitaka Hayashi, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Parallel Canopy Clustering on GPUs",
  Proc. 26th International Conference on Database and Expert Systems Applications (DEXA 2015), pp. 334-348, Valencia, Spain, September 1-4, 2015.
• Mateus S. H. Cruz, Yusuke Kozawa, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "GPU Acceleration of Set Similarity Joins",
  Proc. 26th International Conference on Database and Expert Systems Applications (DEXA 2015), pp. 384-398, Valencia, Spain, September 1-4, 2015.
• Kazumasa Kumamoto, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "A System for Querying RDF Data using LINQ",
  Proc. 4th International Workshop on Advances in Data Engineering and Mobile Computing in conjunction with NBiS2015 (DEMoC 2015), pp. 452-457, Taipei, Taiwan, September 2-4, 2015.
• Sei Onishi, Yuto Yamaguchi, and Hiroyuki Kitagawa,
  "Real-Time Relevance Matching of News and Tweets",
  Proc. 23th International Conference on Cooperative Information Systems (CoopIS 2015), pp. 109-126, Rhodes, Greece, October 28-30, 2015.
• Kosuke Nakabasami, Toshiyuki Amagasa, Salman Shaikh, Franck Gass, and Hiroyuki Kitagawa,
  "An Architecture for Stream OLAP Exploiting SPE and OLAP Engine",
  Proc. 2015 IEEE International Conference on Big Data (IEEE BigData 2015), pp. 319-326, Santa Clara-CA, USA, Oct. 29-Nov. 1, 2015.
• Saki Ueda, Yuto Yamaguchi, Hiroyuki Kitagawa, and Toshiyuki Amagasa,
  "Tweet Location Inference based on Contents and Temporal Association",
  Proc. 16th International Conference on Web Information System Engineering (WISE 2015), part Ⅱ, pp. 259-266, Miami, USA, November 1-3, 2015.
• Takahiro Komamizu, Toshiyuki Amagasa, and Hiroyuki Kitagawa, (Best Paper Award)
  "SPOOL: A SPARQL-based ETL Framework for OLAP over Linked Data",
  Proc. 17th International Conference on Information Integration and Web-based Applications & Services (iiWAS 2015), pp. 49:1-10, Brussels, Belgium, December 11-13, 2015.
• Eri Kataoka, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "A Social Reading System for EPUB Publications",
  Proc. 17th International Conference on Information Integration and Web-based Applications & Services (iiWAS 2015), pp. 6:1-10, Brussels, Belgium, December 11-13, 2015.
• Yuto Yamaguchi, Mitsuo Yoshida, Christos Faloutsos, and Hiroyuki Kitagawa,
  "Why Do You Follow Him? Multilinear Analysis on Twitter",
  Proc. 24th International World Wide Web Conference (WWW2015), pp. 137-138 (companion volume), Florence, Italy, May 18-22, 2015 (poster).

2014

• Yusuke Kozawa, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Probabilistic Frequent Itemset Mining on a GPU Cluster",
  IEICE Transactions on Information and Systems, Vol. E97-D, No. 4, pp. 779-789, April 2014.
• Salman Ahmed Shaikh and Hiroyuki Kitagawa,
  "Top-k Outlier Detection from Uncertain Data",
  International Journal of Automation and Computing (IJAC), Vol. 11, No. 2, pp. 128-142, 2014.
• Salman Shaikh and Hiroyuki Kitagawa,
  "Efficient Distance-based Outlier Detection on Uncertain Datasets of Gaussian Distribution",
  World Wide Web Journal (WWWJ), Vol. 17, No. 4, pp. 511-538, July, 2014.
• Yuki Kashiwabara, Yuya Onizuka, Takashi Ishio, Yasuhiro Hayase, Tetsuo Yamamoto and Katsuro Inoue,
  "Recommending Verbs for Rename Method Using Association Rule Mining,"
  Proc. IEEE Conference on Software Maintenance, Reengineering and Reverse Engineering, 2014 Software Evolution Week (CSMR-WCRE 2014 ERA), pp. 323-327, Antwerp, Belgium, February 3-6, 2014.
• Salman Ahmed Shaikh and Hiroyuki Kitagawa,
  "Continuous Outlier Detection on Uncertain Data Streams",
  Proc. IEEE 9th International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP 2014), pp. 1-7, Singapore, April 21-24, 2014.
• Takahiro Komamizu, Toshiyuki Amagasa and Hiroyuki Kitagawa,
  "A Scheme of Automated Object and Facet Extraction from Graph Data",
  Proc . The 18th International Database Engineering & Applications Symposium (IDEAS 2014), pp. 338-341, Porto, Portugal, July 7-9, 2014.
• Toshiyuki Amagasa, Fan Zhang, Jun Sakuma, and Hiroyuki Kitagawa,
  "A Scheme for Privacy-Preserving Ontology Mapping",
  Proc. 18th International Database Engineering & Applications Symposium (IDEAS 2014), pp. 87-95, Porto, Portugal, July 7-9, 2014.
• Chongjie Li, Toshiyuki Amagasa, Hiroyuki Kitagawa, and Gautam Srivastava,
  "Label-bag based Graph Anonymization via Edge Addition",
  Proc. 7th International C* Conference on Computer Science & Software Engineering (C3S2E 2014), pp. 1, Montreal, Canada, August 4-6, 2014.
• Yuta Sakakura, Yuto Yamaguchi, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "An Improved Method for Efficient PageRank Estimation",
  Proc. The 25th International Conference on Database and Expert Systems Applications (DEXA 2014), Munich, Germany, September 1-5, 2014.
• Takahiro Komamizu, Toshiyuki Amagasa and Hiroyuki Kitagawa,
  "Frequent-Pattern based Facet Extraction from Graph Data",
  Proc . The 17th International Conference on Network-Based Information Systems (NBiS 2014), Salerno, Italy, pp. 318-323, Setptember 10-12, 2014.
• Jun Hwang, Yusuke Kozawa, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "GPU Acceleration of Similarity Search for Uncertain Time Series",
  Proc. 3rd Workshop on Advances in Data Engineering and Mobile Computing (DEMoC 2014), pp. 627-632, Salerno, Italy, September 10-12, 2014.
• Savong Bou, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Keyword search with path-based filtering over XML streams",
  Proc. IEEE 33rd International Symposium on Reliable Distributed Systems (SRDS 2014), pp. 337-338, Nara, Japan, October 6-9, 2014.
• Rina Okada, Chiemi Watanabe, and Hiroyuki Kitagawa,
  "A k-anonymization Algorithm on Social Network Data that Reduces Distances between Nodes",
  Proc. 1st International Workshop on Future Technologies for Smart Information Systems (FTSIS 2014), pp. 76-81, Nara, Japan, October 6-9, 2014.
• Miho Kakizawa, Chiemi Watanabe, Ryo Furukawa, and Tsubasa Takahashi,
  "Improvement of Pk-anonymization",
  Proc. 1st International Workshop on Future Technologies for Smart Information Systems (FTSIS 2014), pp. 82-87, Nara, Japan, October 6-9, 2014.
• Yuto Yamaguchi, Toshiyuki Amagasa, Hiroyuki Kitagawa, and Yohei Ikawa,
  "Online User Location Inference Exploiting Spatiotemporal Correlations in Social Streams",
  Proc. 23th ACM International Conference on Information and Knowledge Management (CIKM 2014), pp. 1139-1148, Shanghai, China, November 3-7, 2014.
• Takahiro Komamizu, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Extracting Facets from Textual Contents for Faceted Search over XML Data",
  Proc. 16th International Conference on Information Integration and Web-based Applications & Services (iiWAS 2014), Hanoi, Vietnam, December 4-6, 2014.
• Savong Bou, Toshiyuki Amagasa and Hiroyuki Kitagawa,
  "Filtering XML Streams by XPath and Keywords",
  Proc. 16th International Conference on Information Integration and Web-based Applications & Services (iiWAS 2014), pp. 410-419, Hanoi, Vietnam, December 4-6, 2014.
• Salman Ahmed Shaikh and Hiroyuki Kitagawa,
  "MOOD: Moving Objects Outlier Detection",
  APWeb 2014 Demo, Changsha, China, September 5-7 2014.

2013

• Masafumi Oyamada, Hideyuki Kawashima, and Hiroyuki Kitagawa,
  "Data Stream Processing with Concurrency Control",
  SIGAPP Appl. Comput. Rev., Vol. 13, No. 2, pp. 54-65, June 2013.
• Rong-Hua Li, Jianquan Liu, Jeffrey Xu Yu, Hanxiong Chen, and Hiroyuki Kitagawa,
  "Co-occurrence Prediction in a Large Location-based Social Network",
  Frontiers of Computer Science, Vol. 7, No. 2, pp. 185-194, April 2013.
• Masafumi Oyamada, Hideyuki Kawashima, and Hiroyuki Kitagawa,
  "Continuous Query Processing with Concurrency Control: Reading Updatable Resources Consistently",
  Proc. 28th ACM Symposium on Applied Computing (SAC 2013), Coimbra, Portugal, pp. 788-794, March 18-22, 2013.
  
• Yutaka Kabutoya, Tomoharu Iwata, Hiroyuki Toda, and Hiroyuki Kitagawa,
  "A Probabilistic Model for Diversifying Recommendation Lists",
  Proc. 15th Asia-Pacific Web Conference (APWeb 2013), Sydney, Australia, pp. 348-359, April 4-6, 2013.
• Salman Shaikh and Hiroyuki Kitagawa,
  "Fast Top-k Distance-based Outlier Detection on Uncertain Data",
  Proc. 14th International Conference on Web-Age Information Management (WAIM 2013), Beidaihe, China, LNCS7923, pp. 301-313, June 14-16, 2013.
• Hiroyuki Inoue, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "An ETL Framework for Online Analytical Processing of Linked Open Data",
  Proc. 14th International Conference on Web-Age Information Management (WAIM 2013), Beidaihe, China, LNCS7923, pp. 111-117, June 14-16, 2013.
• Tadashi Murakami, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "DBPowder: A Flexible Object-Relational Mapping Framework based on a Conceptual Model",
  Proc. 37th IEEE International Computer Software and Applications Conference (COMPSAC 2013), Kyoto, Japan, pp. 589-598, July 22-26, 2013.
• Yusuke Kozawa, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Parallel and Distributed Mining of Probabilistic Frequent Itemsets Using Multiple GPUs",
  Proc. 24th International Conference on Database and Expert Systems Applications (DEXA 2013), Prague, Czech Republic, pp. 145-152, August 26-30, 2013.
• Toshiyuki Amagasa, Mana Seino, and Hiroyuki Kitagawa,
  "Energy-Efficient XML Stream Processing through Element-Skipping Parsing",
  Proc. 24TH International Workshop on Database and Expert Systems Applications (DEXA Workshop2013), pp.254-258, Prague, Czech Republic, August 26-29, 2013.
• Kenji Gonnokami, Atsuyuki Morishima, Shigeo Sugimoto, and Hiroyuki Kitagawa,
  "Condition-Task-Store: A Declarative Abstraction for Microtask-based Complex Crowdsourcing",
  Proc. First VLDB Workshop on Databases and Crowdsourcing (DBCrowd 2013), pp. 20-25, August 26-30, 2013.
• Kousuke Nakabasami, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Querying MongoDB with LINQ in a Server-side JavaScript Environment",
  Proc. 2nd International Workshop on Advances in Data Engineering and Mobile Computing (DEMoC 2013), Gwangju, Korea, pp. 344-349, September 4-6, 2013.
• Yuto Yamaguchi, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Landmark-Based User Location Inference in Social Media",
  Proc. 1st ACM Conference on Online Social Networks (COSN 2013), Boston, USA, pp. 223-234, October 7-8, 2013 [16%].
• Nishimura Naotaka, Kawashima Hideyuki, and Kitagawa Hiroyuki,
  "A High Throughput Complex Event Detection Technique with Bulk Evaluation",
  Proc. 8th International Conference on P2P, Parallel, Grid, Cloud and Internet Computing (3PGCIC), pp.624-629, Compiegne, France, Oct 28-30, 2013.
• Atsuyuki Morishima, Erika Yumiya, Masami Takahashi, Shigeo Sugimoto, and Hiroyuki Kitagawa,
  "Efficient Filtering and Ranking Schemes for Finding Inclusion Dependencies on the Web",
  Proc. 22nd International Conference on Information and Knowledge Management (CIKM 2013), pp. 763-768, October 29, 2013.
• Yuta Sakakura, Yuto Yamaguchi, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "A Local Method for ObjectRank Estimation",
  Proc. 15th International Conference on Information Integration and Web-based Applications & Services (iiWAS 2013), Vienna, Austria, pp. 92-101, December 2-4, 2013.
• Eri Kataoka, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "A System for Social Reading based on EPUB3",
  Proc. 15th International Conference on Information Integration and Web-based Applications & Services (iiWAS 2013), Vienna, Austria, pp. 72-76, December 2-4, 2013.
• Ayano Yoshikuni and Chiemi Watanabe,
  "Account Reachability : A Measure of Privacy Risk for Exposure the User's Multiple SNS Accounts",
  Proc. 15th International Conference on Information Integration and Web-based Applications & Services (iiWAS2013), Vienna, Austria, December 2-4, 2013.
• Eric Fukuda, Hideyuki Kawashima, Hiroaki Inoue, Taro Fujii, Koichiro Furuta, Tetsuya Asai, and Masato Motomura,
  "C-Based Adaptive Stream Processing on Dynamically Reconfigurable Hardware: A Case Study on Window Join",
  9th International Symposium on Applied Reconfigurable Computing (ARC 2013), Los Angeles, California, March 25-27, 2013.
• Eric Shun Fukuda, Hideyuki Kawashima, Hiroaki Inoue, Tetsuya Asai, and Masato Motomura,
  "Exploiting Hardware Reconfigurability on Window Join",
  The 2013 International Conference on High Performance Computing & Simulation (HPCS 2013), Helsinki, Finland, July 1-5, 2013.
• Yuto Yamaguchi, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Recommending Fresh URLs using Twitter Lists",
  The 7th International AAAI conference on Weblogs and Social Media (ICWSM 2013), Boston, USA, July 8-10, 2013.
• Oge Yasin, Takefumi Miyoshi, Hideyuki Kawashima, and Tsutomu Yoshinaga,
  "A Fast Handshake Join Implementation on FPGA with Adaptive Merging Network",
  The 25th International Conference on Scientific and Statistical Database Management (SSDBM 2013), Baltimore, Maryland, July 29-31, 2013.
• Salman Ahmed Shaikh and Hiroyuki Kitagawa,
  "Differential Outlier Detection on Uncertain Streams of the Gaussian Distribution",
  The 5th International Workshop with Mentors on Databases, Web and Information Management for Young Researchers (iDB2013), Sapporo, Japan, July 21 - 23, 2013.
• Yuto Yamaguchi, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Landmark-Based User Location Inference on Social Media",
  The 5th International Workshop with Mentors on Databases, Web and Information Management for Young Researchers (iDB2013), Sapporo, Japan, July 21 - 23, 2013.
• Yuta Sakakura, Yuto Yamaguchi, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "A Local Method for ObjectRank Estimation",
  The 5th International Workshop with Mentors on Databases, Web and Information Management for Young Researchers (iDB2013), Sapporo, Japan, July 21 - 23, 2013.
• Hiroyuki Inoue, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "An ETL Framework for Online Analytical Processing of Linked Open Data",
  The 5th International Workshop with Mentors on Databases, Web and Information Management for Young Researchers (iDB2013), Sapporo, Japan, July 21 - 23, 2013.
• Hideyuki Kawashima (keynote talk),
  "Taming Big Data Streams",
  The International Symposium on Embedded Multicore/Manycore System-on-Chip (MCSoC-13), Tokyo, Japan, September 26-28, 2013.

2012

• Yasin Oge, Takefumi Miyoshi, Hideyuki Kawashima, and Tsutomu Yoshinaga,
  "Design and Implementation of a Handshake Join Architecture on FPGA",
  IEICE Trans. on Information and Systems, Vol. E95-D, No. 12, pp. 2919-2927, 2012-12-01.
• Yuto Yamaguchi, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Tagging users based on Twitter lists",
  Int. J. Web Engineering and Technology (IJWET), Vol. 7, No. 3, pp.273-298, 2012.
• Shohei Ohsawa, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "RDF Packages: A Scheme for Efficient Reasoning and Querying over Large-Scale RDF Data",
  International Journal of Web Information Systems (IJWIS), Volume 8, Issue 2, pp. 212-233, 2012.
• Takahiro Komamizu, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Faceted Navigation Framework for XML Data",
  International Journal of Web Information Systems (IJWIS), Volume 8, Issue 4, pp.348-370, 2012.
• Katsuhiro Tomiyama, Hideyuki Kawashima, Hiroyuki Kitagawa,
  "A Security aware Stream Data Processing Scheme on the Cloud and its Efficient Execution Methods",
  Proc. Fourth International Workshop on Cloud Data Management (CloudDB'12), Maui, Hawaii, pp. 59-66, October 29, 2012.
• Yusuke Kozawa, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "GPU Acceleration of Probabilistic Frequent Itemset Mining from Uncertain Databases",
  Proc. 21st ACM International Conference on Information and Knowledge Management (CIKM 2012), Maui, Hawaii, pp. 892-901, October 29 - November 2, 2012.
• Yasin Oge, Takefumi Miyoshi, Hideyuki Kawashima, and Tsutomu Yoshinaga,
  "Design and Implementation of a Merging Network Architecture for Handshake Join Operator on FPGA",
  Proc. 6th IEEE International Symposium on Embedded Multicore SoCs (MCSoC-12), Aizu-Wakamatsu, Japan, pp. 84-91, September 20-22, 2012.
• Takahiro Komamizu, Mariko Kamie, Kazuhiro Fukui, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "A Scheme of Fragment-based Faceted Image Search",
  Proc. 23rd International Conference on Database and Expert Systems Applications (DEXA 2012), Vienna, Austria, pp. 450-457, Sep. 3-7, 2012.
• Yuta Sakakura, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Detecting Social Bookmark Spams using Multiple User Accounts",
  Proc. 1st International Workshop of Social Knowledge Discovery and Utilization (SKDU'12), Istanbul, Turkey, pp. 1185-1190, August 26-29, 2012.
• Salman Shaikh and Hiroyuki Kitagawa,
  "Distance-based Outlier Detection on Uncertain Data of Gaussian Distribution",
  Proc. 14th Asia-Pacific Web Conference (APWeb), Kunming, China, pp. 109-121, April 11-13, 2012.
• Jianquan Liu, Hanxiong Chen, Kazutaka Furuse, and Hiroyuki Kitagawa,
  "An Efficient Algorithm for Arbitrary Reverse Furthest Neighbor Queries",
  Proc. 14th Asia-Pacific Web Conference (APWeb), Kunming, China, pp. 60-72, April 11-13, 2012.
• Taiga Abe, Hideyuki Kawashima, and Hiroyuki Kitagawa,
  "An Efficient Stream Archiving Method by Operator Merge and Write Control",
  Proc. 5th International Workshop on Data Management for Wireless and Pervasive Communications (DMWPC), Fukuoka, Japan, pp. 783-788, March 26-29.
• Sosuke Ota, Atsuyuki Morishima, Toshiyuki Amagasa, and Norihide Shinagawa,
  "C-Mapping: A Flexible XML-RDB Mapping Method based on Functional and Inclusion Dependencies",
  Proc. 27th ACM Symposium on Applied Computing (SAC 2012), Riva del Garda (Trento), Italy, pp. 577-584, March 26-30, 2012.
• Mariko Kamie, Takako Hashimoto, and Hiroyuki Kitagawa,
  "Effective Web Video Clustering using Playlist Information",
  Proc. 27th ACM Symposium on Applied Computing (SAC 2012), Riva del Garda (Trento), Italy, pp. 970-977, March 26-30, 2012.
• Erika Yumiya, Atsuyuki Morishima, Masami Takahashi, Shigeo Sugimoto, Hiroyuki Kitagawa,
  "Filtering and Ranking Schemes for Finding Inclusion Dependencies on the Web",
  Proc. 21st International World Wide Web Conference (WWW 2012), pp.647-648, Lyon, France, April 16-20, 2012
• Hideyuki Kawashima, Chunyong Wang, and Hiroyuki Kitagawa,
  "Extracting Hot Spots from Earth Observation Satellite Data",
  Proc. 24th International Conference on Scientific and Statistical Database Management (SSDBM), pp. 581-586, Chania, Crete, Greece, June 25-27, 2012.
• Katsuhiro Tomiyama, Hideyuki Kawashima and Hiroyuki Kitagawa,
  "A Security Aware Stream Data Processing Scheme on the Cloud",
  The 21st USENIX Security Symposium, Bellevue, Washington, August 8-10, 2012.
• Katsuhiro Tomiyama, Hideyuki Kawashima, and Hiroyuki Kitagawa,
  "A Security aware Stream Data Processing Scheme with Encryption",
  The 4th International Workshop with Mentors on Databases, Web and Information Management for Young Researchers (iDB2012), Nagoya, Japan, July 31 - August 1, 2012.
• Salman Ahmed Shaikh and Hiroyuki Kitagawa,
  "Distance-based Outlier Detection on Uncertain Data of Bounded Gaussian Distribution",
  The 4th International Workshop with Mentors on Databases, Web and Information Management for Young Researchers (iDB2012), Nagoya, Japan, July 31 - August 1, 2012.

2011

• Cui Zhu, Hiroyuki Kitagawa, Spiros Papadimitriou,and Christos Faloutsos,
  "Outlier Detection by Example",
  Journal of Intelligent Information Systems, Vol. 36, No. 2, pp. 217-247, 2011.
• Jianquan Liu, Hanxiong Chen, Kazutaka Furuse, Hiroyuki Kitagawa, and Jeffrey Xu Yu,
  "On Efficient Distance-based Similarity Search",
  Proc. 11th IEEE International Conference on Data Mining (ICDM), PhD Forum, Vancouver, Canada, pp. 1199-1202, December 11-14, 2011.
• Takahiro KOMAMIZU, Toshiyuki AMAGASA, and Hiroyuki KITAGAWA,
  "A Framework of Faceted Navigation for XML Data",
  Proc. 13th International Conference on Information Integration and Web-based Applications & Services (iiWAS 2011), Ho Chi Minh City, Vietnam, pp. 28-35, December 5-7, 2011.
• Yasin Oge, Takefumi Miyoshi, Hideyuki Kawashima and Tsutomu Yoshinaga,
  "An Implementation of Handshake Join on FPGA",
  Proc. Second International Conference on Networking and Computing (ICNC 2011), Osaka, Japan, pp. 95-104, December 2011.
• Tsubasa Takahashi, Hideyuki Kawashima, and Hiroyuki Kitagawa,
  "A Video Manager for Relational Stream Processing Systems"
  The 2nd International Workshop on Streaming Media Delivery and Management Systems (SMDMS 2011), Proceedings of 3PGCIC, Barcelona, Spain, pp. 338-343, October 26-28, 2011.
• Masafumi Oyamada, Hideyuki Kawashima, and Hiroyuki Kitagawa,
  "Efficient Invocation of Transaction Sequences Triggered by Data Streams"
  The 2nd International Workshop on Streaming Media Delivery and Management Systems (SMDMS 2011), Proceedings of 3PGCIC, Barcelona, Spain, pp. 332-337, October 26-28, 2011.
• Kazutaka Furuse, Hiroaki Ohmura, Hanxiong Chen, and Hiroyuki Kitagawa,
  "An Extended Method for Finding Related Web Pages with Focused Crawling Techniques",
  Proc. 15th International Conference on Knowledge-Based and Intelligent Information & Engineering Systems (KES 2011), Kaiserslautern, Germany, pp. 21-30, September 12-14, 2011.
• Yusuke Kozawa, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Fast Frequent Itemset Mining from Uncertain Database Using GPGPU",
  Proc. Fifth International VLDB Workshop on Management of Uncertain Data (MUD 2011), Seattle, Washington, pp. 17-24, August 29, 2011.
• Yuto Yamaguchi, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Tag-based User Topic Discovery using Twitter Lists"
  Proc. International Conference on Advances in Social Network Analysis and Mining (ASONAM 2011), Kaohsiung City, Taiwan, pp. 13-20, July 25-27, 2011.
• Eli Koffi Kouassi, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Efficient Probabilistic Latent Semantic Indexing using Graphics Processing Unit",
  Proc. International Conference on Computational Science (ICCS 2011), Singapore, pp. 382-391, June 1-3, 2011.
• Masafumi Oyamada, Hideyuki Kawashima, and Hiroyuki Kitagawa,
  "Integration of Data Streams and Relations with Main Memory Database",
  Proc. 8th International Conference on Networked Sensing Systems (INSS 2011), Penghu, Taiwan, June 13-15, 2011.
• Takefumi Miyoshi, Yuta Terada, Hideyuki Kawashima, and Tsutomu Terada,
  "A Coarse Grain Reconfigurable Processor Architecture for Stream Processing Engine",
  Proc. 21st International Conference on Field Programmable Logic and Applications (FPL 2011), pp. 490-495, Crete, Greece, September 5-7, 2011.
• Takahiro Komamizu, Yuto Yamaguchi, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "FACTUS: Faceted Twitter User Search using Twitter Lists,"
  Proc. 12th International Conference on Web Information System Engineering (WISE 2011), pp. 343-344, Sydney, Australia, October 13-14, 2011. (demo)

2010

• Hiroyuki Kitagawa, Yousuke Watanabe, Hideyuki Kawashima, and Toshiyuki Amagasa,
  "Stream-based Real World Information Integration Framework",
  in "Wireless Sensor Network Technologies for the Information Explosion Era",
  Studies in Computational Intelligence Series, Vol. 278, pp. 173-204, Springer, 2010.
• Yousuke Watanabe and Hiroyuki Kitagawa,
  "Query Result Caching for Multiple Event-driven Continuous Queries ",
  Information Systems, Vol. 35, No. 1, pp. 94-110, 2010.
• Djelloul Boukhelef and Hiroyuki Kitagawa,
  "Efficient Load Balancing Techniques for Self-organizing Content Addressable Networks",
  Journal of Networks, Vol. 5, No. 3, pp. 321-334, Mar 2010.
• Tsubasa Takahashi, Hiroyuki Kitagawa, and Keita Watanabe,
  "Social Bookmarking Induced Active Page Ranking",
  IEICE Transactions Vol.E93-D, No.6, pp.1403-1413, Jun. 2010
• Hasan Kadhem, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "MV-OPES: Multivalued-Order Preserving Encryption Scheme: A Novel Scheme for Encrypting Integer Value to Many Different Values,"
  IEICE Trans. Info. & Syst., Vol. E93-D, No. 9, pp.2520-2533, Sept. 2010.
• Imam Machdi, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Parallel Holistic Twig Joins on a Multi-core System,"
  International Journal of Web Information Systems (IJWIS), Vol. 6, No. 2, pp. 149-177, 2010.
• Masami Takahashi, Atsuyuki Morishima, Shigeo Sugimoto, Hiroyuki Kitagawa,
  "A Constraint-based Tool for Data Integrity Management on the Web",
  Proc. 4th International Conference on Ubiquitous Information Management and Communication (ICUIMC 2010), pp. 144-146, SKKU, Suwon, Korea, January 14-15, 2010. (short)
• Yoshishige Tsuji, Hideyuki Kawashima, and Ikuo Takeuchi,
  "Optimization of Query Processing with Cache Conscious Buffering Operator",
  Proc. 6th International Workshop on Databases in Networked Information Systems (DNIS 2010), pp. 65-79, University of Aizu, Japan, March 29 - 31, 2010.
• Hiroyuki Kitagawa, Yoshiharu Ishikawa, Qing Li, and Chiemi Watanabe (eds.),
  Database Systems for Advanced Applications (Proc. 15th International Conference on Database Systems for Advanced Applications (DASFAA 2010)), Part I, April 2010.
• Hiroyuki Kitagawa, Yoshiharu Ishikawa, Qing Li, and Chiemi Watanabe (eds.),
  Database Systems for Advanced Applications (Proc. 15th International Cponference on Database Systems for Advanced Applications (DASFAA 2010)), Part II, April 2010.
• Takashi Takagi, Hideyuki Kawashima, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Provinding Constructed Buildings Information by ASTER Satellite DEM Images and Web Contents",
  Proc. of Data Intensive eScience Workshop (DIEW 2010) (DASFAA2010 Workshop), LNCS 6193, pp. 81-92, April 2010.
• Hiroaki Shiokawa, Hiroyuki Kitagawa, and Hideyuki Kawashima,
  "A-SAS: An Adaptive High-Availability Scheme for Distributed Stream Processing Systems",
  Proc. of 3rd. International Workshop on Sensor Network Technologies for Information Explosion Era (SeNTIE 2010), pp. 413-418, Kansas City, Missouri, USA, May 23-26, 2010.
• Hasan Kadhem, Toshiyuki Amagasa, and Hiroyuki Kitagawa
  "A Secure and Efficient Order Preserving Encryption Scheme for Relational Databbases,"
  The 2nd International Workshop with Mentors on Databases, Web and Information Management(iDB Workshop 2010), pp.90-99, Tokyo, Japan, August 2-4, 2010.
• Jianquan Liu, Hanxiong Chen, Kazutaka Furuse, and Hiroyuki Kitagawa,
  "An Efficient Algorithm for Reverse Furthest Neighbors Query with Metric Index",
  Proc. of 21th International Conference on Database and Expert Systems Applications (DEXA2010), pp. 437-451, Bilbao, Spain, August 30-September 3 2010.
• Hang Shi, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Fast Detection of Functional Dependencies in XML Data",
  Proc. of 7th International XML Database Symposium (XSym 2010), pp. 113-127, Singapore, September 2010.
• Hasan Kadhem, Toshiyuki Amagasa, and Hiroyuki Kitagawa (Best Student Paper Award)
  "A Secure and Efficient Order Preserving Encryption Scheme for Relational Databases,"
  Proc. International Conference on Knowledge Management and Information Sharing (KMIS 2010), pp. 25-35, Valencia, Spain, October 2010.
• Toshiyuki Amagasa, Noriyoshi Ishii, Tomoteru Yoshie, Osamu Tatebe, Mitsuhisa Sato, and Hiroyuki Kitagawa,
  "A Faceted-Navigation System for QCDml Ensemble XML Data",
  Proc. International Conference on P2P, Parallel, Grid, Cloud and Internet Computing (3PGCIC), pp. 132-139, Fukuoka, Japan, November 4-6, 2010.
• Hideyuki Kawashima, Hiroyuki Kitagawa, and Xin Li,
  "Complex Event Processing over Uncertain Data Streams",
  Proc. International Conference on P2P, Parallel, Grid, Cloud and Internet Computing (3PGCIC), pp.521-526, Fukuoka, Japan, November 4-6, 2010.
• Mariko Kamie, Takako Hashimoto, and Hiroyuki Kitagawa,
  "Topic-Based Awareness Computing Model for Video-Sharing Service",
  Proc. ISAC 2010-2nd International Symposium on Aware Computing, pp. 44-50, National Cheng Kung University, Tainan, Taiwan, Novemnber 1-4, 2010.
• Ngo Sy Viet Phu, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Extracting XML Data from the Web",
  Proc. 12th International Conference on Information Integration and Web-based Applications & Services (iiWAS2010), pp. 109-116, Paris, France, November 8-10, 2010.
• Shoei Osawa, Toshiyuki Amagasa, and Hiroyuki Kitagawa, (Best Paper Award)
  "RDF Packages:A Scheme for Efficient Resoning and Querying over Large-Scale RDF Data",
  Proc. 12th International Conference on Information Integration and Web-based Applications & Services (iiWAS2010), pp. 341-348, Paris, France, November 8-10, 2010.
• Yuto Yamaguchi, Tsubasa Takahashi, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "TURank:Twitter User Ranking based on User-Tweet Graph Analysis",
  Proc. 11th International Conference on Web Information Systems Engineering (WISE 2010), pp240-253, Hong Kong, December 12-14, 2010.

2009

• Hiroki Kimura, Hideyuki Kawashima, Hiroyuki Kusaka and Hiroyuki Kitagawa,
  "Applying a Machine Learning Technique to Classification of Japanese Pressure Patterns",
  Data Science Journal, Vol. 8, S59-S67, March 2009.
• Chantola Kit, Toshiyuki Amagasa and Hiroyuki Kitagawa,
  "Algorithms for Structure-based Grouping in XML-OLAP",
  International Journal of Web and Information Systems, Vol. 5 Issue 2, pp. 122-150, June 2009.
• Imam Machdi, Toshiyuki Amagasa and Hiroyuki Kitagawa,
  "XML Data Partitioning Schemes for Parallel Holistic Twig Joins",
  International Journal of Web and Information Systems, Vol. 5 Issue 2, pp. 151-194, June 2009.
• Zhitao Shen, Hideyuki Kawashima and Hiroyuki Kitagawa,
  "Efficient Probabilistic Event Stream Processing with Lineage and Kleene-plus",
  International Journal of Communication Networks and Distributed Systems, Vol. 2, No.4 pp. 355 - 374, 2009
• MoonBae Song and Hiroyuki Kitagawa,
  "Managing Frequent Updates in R-trees for Update-intensive Applications",
  IEEE Transactions on Knowledge and Data Engineering, Vol. 21, No. 11, pp. 1573-1589, November 2009.
• Takako Hashimoto, Takashi Katooka, Atsushi Iizawa, and Hiroyuki Kitagawa,
  "Important Scene Analysis Model Using Result Importance and Situation Importance",
  International Journal of Wireless and Mobile Computing, Vol. 3, No. 4, pp.225-235, 2009.
• Hasan Kadhem, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Mixed Encryption over Semi-Trusted Datebase",
  MASAUM Journal of Basic and Applied Science(MJBAS), Vol.1 Issue.2 pp.302-312, 2009.
• Imam Machdi, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "XML Data Partitioning Strategies to Improve Parallelism in Parallel Holistic Twig Joins",
  Proc. 3rd International Conference on Ubiquitous Information Management and Communication (ICUIMC-09), pp. 501-510, Suwon, Korea, Jan 15 - 16, 2009.
• Djelloul Boukhelef and Hiroyuki Kitagawa,
  "Dynamic Load Balancing in RCAN Content Addressable Network",
  Proc. 3rd International Conference on Ubiquitous Information Management and Communication (ICUIMC-09), pp. 98-106, Suwon, Korea, Jan 15 - 16,2009.
• Kosuke Ohki, Yousuke Watanabe, and Hiroyuki Kitagawa,
  "Evaluation of a Framework for Dynamic Source Selection in Stream Processing",
  Proc. International Workshop on Data Management for Information Explosion in Wireless Networks (DMIEW 2009), pp. 1106-1111, Fukuoka, Japan, March 16 - 19, 2009.
• Kenshiro Hirose, Hideyuki Kawashima, Satoru Satake and Michita Imai,
  "Sharing Gesture Contents among Heterogeneous Robots",
  Proc. International Workshop on Data Management for Information Explosion in Wireless Networks (DMIEW 2009), pp. 1076-1081, Fukuoka, Japan, March 16 - 19, 2009.
• Hasan Kadhem, Toshiyuki Amagasa, Hiroyuki Kitagawa,
  "Encryption over Semi-trusted Database",
  Proc. DASFAA2009 PhD Workshop, LNCS5667, pp.358-362, Brisben, Australia, April 20, 2009.
• Tsubasa Takahashi and Hiroyuki Kitagawa,
  "A Ranking Method for Web Search Using Social Bookmarks",
  Proc. International Conference on Database Systems for Advanced Applications (DASFAA 2009), pp. 585-589, Brisben, Australia, April 21 - 23, 2009.
• Hasan Kadhem, Toshiyuki Amagasa and Hiroyuki Kitagawa,
  "A Novel Framework for Database Security based on Mixed Cryptography",
  Proc. International Conference on Internet and Web Applications and Services(ICIW 2009), pp. 163-170, Venice, Italy, May 24 - 28, 2009.
• Xin Li,Zhitao Shen,Hideyuki Kawashima and Hiroyuki Kitagawa,
  "Pattern-based Window: A Novel Window Operator to Support Event Detection for Data Stream Processing",
  Proc. International Workshop on Sensor Network Technologies for Information Explosion Era (SeNTIE 2009), Taipei, Taiwan, May 18 - 21, 2009.
• Yuki Terajima, Hideyuki Kawashima and Hiroyuki Kitagawa,
  "ProvidingPersistence to Provenances on Stream Processing Environment",
  Proc. 3rd International Workshop on SensorWebs, Databases and Mining in Networked Sensing Systems (SWDMNSS 2009), Carnegie Mellon University, Pittsburgh, USA, June 17-19.
• Ryo Sato, Hideyuki Kawashima and Hiroyuki Kitagawa,
  "Associating Bayesian Networks with Stream Data Processing",
  Proc. 3rd International Workshop on Sensor-Webs, Databases and Mining in Networked Sensing Systems (SWDMNSS 2009), Carnegie Mellon University, Pittsburgh, USA, June 17-19.
• Atsuyuki Morishima, Akiyoshi Nakamizo, Toshinari Iida, Shigeo Sugimoto, Hiroyuki Kitagawa,
  "Bringing Your Dead Links Back to Life: A Comprehensive Approach and Lessons Learned",
  Proc. the 20th ACM Conference on Hypertext and Multimedia (ACM Hypertext 2009),pp. 15-24, Torino, Italy, June 29 -July 1, 2009.
• Djelloul Boukhelef, Hiroyuki Kitagawa
  "Efficient Multidimensional Data Management in Structured Peer-to-Peer Systems"
  PhD Workshop (VLDB 2009). 24 August 2009, Lyon France.
• Imam Machdi, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Executing Parallel TwigStack Algorithm on a Multi-core System",
  Proc. 11th International Conference on Information Integration and Web-based Applications and Services (iiWAS2009), Kuala Lumpur, Malaysia Dec. 14-16, 2009.
• Atsuyuki Morishima, Akiyoshi Nakamizo, Toshinari Iida, Shigeo Sugimoto, Hiroyuki Kitagawa,
  "Why are Moved Web Pages Difficult to Find? The WISH Approach,"
  Proc. 18th Int. World Wide Web Conference, pp.1117-1118, Madrid, Spain, April 2009 (poster).

2008

• Sophoin Khy, Yoshiharu Ishikawa, and Hiroyuki Kitagawa,
  "A Novelty-based Clustering Method for On-line Documents",
  World Wide Web Journal, Vol. 11, No. 1, pp. 1-37, March 2008.
• Hiroyuki Toda, Hiroyuki Kitagawa, Ko Fujimura, and Ryoji Kataoka,
  "Topic Structure Mining using Temporal Co-occurrence",
  Proc. 2nd International Conference on Ubiquitous Information Management and Communication (ICUIMC 2008), pp. 253-258,
  Suwon, Korea, January. 2008.
• Yousuke Watanabe, Ryo Akiyama, Kousuke Ohki and Hiroyuki Kitagawa,
  "A Video Stream Management System for Heterogeneous Information Integration Environments",
  Proc. 2nd International Conference on Ubiquitous Information Management and Communication (ICUIMC 2008), pp. 219-224, Suwon, Korea, January, 2008.
• Yuan Li and Hiroyuki Kitagawa,
  "Example-Based Robust DB-Outlier Detection for High Dimensional Data",
  Proc. 13th International Conference on Database Systems for Advanced Applications (DASFAA 2008), LNCS 4947, pp. 330-347, New Delhi, India, March 19-21 2008.
• Lianzi Wen, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "An Approach for XML Similarity Join using Tree Serialization",
  Proc. 13th International Conference onDatabase Systems for Advanced Applications (DASFAA 2008), LNCS 4947, pp. 562-570, New Delhi, India, March 19-21 2008.
• Kazuyo Narita and Hiroyuki Kitagawa,
  "Detecting Outliers in Categorical Record Databases Based on Attribute Associations",
  Proc. 10th Asia-Pacific Web Conference International Conference (APWeb 2008), LNCS 4976, pp. 111-123, Shenyang, China, April 26-28 2008.
• Jiajun Gu and Hiroyuki Kitagawa,
  "Extending Keyword Search to Metadata on Relational Databases",
  Proc. The first International Workshop on Information-explosion and Next Generation Search (INGS 2008), pp. 97-103, Shenyang, China, April 26-27 2008.
• Ryo Sato, Hideyuki Kawashima and Hiroyuki Kitagawa,
  "The Integration of Data Streams with Probabilities and a Relational Database using Bayesian Networks",
  Proc. International Workshop on Sensor Network Technologies for Information Explosion Era (SeNTIE 2008), pp. 114-121, Beijing, China, April 27, 2008.
• Zhitao Shen, Hideyuki Kawashima and Hiroyuki Kitagawa,
  "Lineage-based Probabilistic Event Stream Processing",
  Proc. International Workshop on Sensor Network Technologies for Information Explosion Era (SeNTIE 2008), pp. 106-113, Beijing, China, April 27, 2008.
• Koichi Inoue, Dai Akashi, Michihiro Koibuchi, Hideyuki Kawashima and Hiroaki Nishi,
  "Semantic router using data stream to enrich services",
  Proc. International Conference on Future Internet Technologies (CFI08), Seoul, Korea, June 18-20, 2008. pp. 20-23.
• Kazuyo Narita and Hiroyuki Kitagawa, (Hongjun Lu Best Student Paper Award)
  "Outlier Detection for Transaction Databases using Association Rules",
  Proc. 9th International Conference On Web-Age Information Management (WAIM 2008), pp. 373-380, Zhangjiajie, China, July 20-22 2008.
• Tsubasa Takahashi and Hiroyuki Kitagawa,
  "S-BITS : Social-Bookmarking Induced Topic Search",
  Proc. 9th International Conference On Web-Age Information Management (WAIM 2008), pp. 25-30, Zhangjiajie, China, July 20-22 2008.
• Hideyuki Kawashima, Ryo Sato and Hiroyuki Kitagawa,
  "Models and Issues on Probabilistic Data Stream Systems with Bayesian Networks",
  Proc. 2nd International Workshop on SensorWebs, Databases and Mining in Networked Sensing Systems (SWDMNSS 2008), pp. 157-160, Turku, Finland, July 28 - August 1, 2008.
• Xiaochen Li, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Searching XML Documents by Keywords in Structured P2P Networks",
  3rd International Workshop on XML Data Management Tools and Techniques (XANTEC 2008), pp. 274-278, Turin, Italy, Sept 1 - 5, 2008.
• Kozue Ishida and Hiroyuki Kitagawa,
  "Detecting Current Outliers: Continuous Outlier Detection over Time-Series Data Streams",
  19th International Conference on Database and Expert Systems Applications (DEXA 2008), pp. 255-268, Turin, Italy, Sept 1 - 5, 2008.
• Boukhelef Djelloul and Hiroyuki Kitagawa,
  "Multi-ring infrastructure for Content Addressable Networks",
  16th International Conference on COOPERATIVE INFORMATION SYSTEMS (CoopIS 2008), pp. 193-211, Monterrey, Mexico, Nov 12 - 14, 2008. LNCS 5331 Springer 2008.  
• Imam Machdi, Toshiyuki Amagasa, and Hiroyuki Kitagawa,(Best Student Paper Award)
  "GMX: An XML Data Partitioning Scheme for Holistic Twig Joins",
  Proc. 10th International Conference on Information Integration and Web-based Applications and Services (iiWAS 2008), pp. 137-146. Linz, Austria, Nov 24 - 26, 2008.
• Chantola Kit, Toshiyuki Amagasa, and Hiroyuki Kitagawa,(Best Student Paper Award)
  "Algorithms for Efficient Structure-based Grouping in XML-OLAP",
  Proc. 10th International Conference on Information Integration and Web-based Applications and Services (iiWAS 2008), pp. 170-177, Linz, Austria, Nov 24 - 26, 2008.
• Sophoin Khy, Yoshiharu Ishikawa, and Hiroyuki Kitagawa,
  "A Query Language and Its Processing for Time-Series Document Clusters",
  Proc. 11th International Conference on Asia-Pacific Digital Library (ICADL 2008), pp. 82-92, Bali, Indonesia, Dec 2 - 5, 2008.
• Atsuyuki Morishima, Akiyoshi Nakamizo, Toshinari Iida, Shigeo Sugimoto, Hiroyuki Kitagawa,
  "PageChaser: A Tool for the Automatic Correction of Broken Web Links",
  The 24th International Conference on Data Engineering (ICDE 2008), pp.1486-1488, Cancun, Mexico, April 7-12, 2008.
• Keiichirou Ui, Toshiyuki Amagasa, and Hiroyuki Kitagawa
  "A FUSE-Based Tool for Accessing Meteorological Data in Remote Servers."
  20th International Confarence on Sientific and Statistical Database Management (SSDBM'08), pp.592-597, Hong Kong, China, July 9-11, 2008.
• Kosuke Ohki, Yousuke Watanabe, and Hiroyuki Kitagawa,
  "Dynamic Source Selection to Handle Changes of User's Interest in Continuous Query",
  16th International Conference on COOPERATIVE INFORMATION SYSTEMS, LNCS 5333, pp. 6-7, Monterrey, Mexico, Nov 12 - 14, 2008.
• Hiroki Kimura, Hideyuki Kawashima, Hiroyuki Kusaka, and Hiroyuki Kitagawa,
  "Detection of a Specific Pressure Pattern around Japan by Support Vector Machine",
  Fifty Years after IGY -Modern Information Technologies and Earth and Solar Sciences-, Tsukuba, Japan, November 11-13, 2008.
• Keiichiro Ui, Toshiyuki Amagasa, Hiroyuki Kitagawa and Takeshi Horinouchi
  "A FUSE-based access tool for scientific data on the Web",
  Fifty Years after IGY -Modern Information Technologies and Earth and Solar Sciences-, Tsukuba, Japan, November 11-13, 2008.

2007

• Manabu Nakamura, Hideyuki Kawashima, Satoru Satake, and Michita Imai,
  "RSV: Sensor Data Analysis System for Human Robot Interaction",
  Proc. 2nd IASTED International Conference on Human-Computer Interaction(IASTED-HCI), Chamonix, France, March 2007.
• Chantola Kit, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "OLAP Query Processing for XML Data in RDBMS",
  Proc. 3rd IEEE International Workshop on Databases for Next-Generation Researchers, Istanbul, Turkey, April 2007.
• Yuan Li and Hiroyuki Kitagawa,
  "DB-Outlier Detection by Example in High Dimensional Datasets",
  Proc. 3rd IEEE International Workshop on Databases for Next-Generation Researchers, Istanbul, Turkey, April 2007.
• Takeshi Kanda, Yutaka Yanagisawa, Takuya Maekawa, Michita Imai, Hideyuki Kawashima and Takeshi Okadome,
  "A Distributed Inference System on Sensor Nodes using Neighbor's Context Data",
  Proc. 3rd IEEE International Workshop on Databases for Next-Generation Researchers, Istanbul, Turkey, April 2007.
• Manabu Nakamura, Hideyuki Kawashima, Satoru Satake, and Michita Imai,
  "Mana: A Real World Oriented Query Processing System Supporting Control of Sensor Characteristics",
  Proc. International Workshop on SensorWebs, Databases and Mining in Networked Sensing Systems (SWDMNSS), pp. 23-30, Braunschweig, Germany, June 2007.
• Satoru Satake, Hideyuki Kawashima, and Michita Imai,
  "Brownie: Searching Concealed Real World Artifacts",
  Proc. 4th International Conference on Networked Sensing Systems (INSS'07), pp. 159-162, Braunschweig, Germany, June 2007.
• Hideyuki Kawashima,
  "KRAFT: A Real-Time Active DBMS for Signal Streams",
  Proc. 4th International Conference on Networked Sensing Systems (INSS'07), pp. 163-166, Braunschweig, Germany, June 2007.
• Jianwei Zhang, Yoshiharu Ishikawa, and Hiroyuki Kitagawa,
  "Record Extraction Based on User Feedback and Document Selection",
  Proc. Joint Conference of 9th Asia-Pacific Web Conference and 8th International Conference on Web-Age Information Management (APWeb/WAIM 2007), LNCS 4505, pp. 574-585, HuangShan (Yellow Mountains), China, June 2007.
• Toshiyuki Amagasa, Chunhui Wu, and Hiroyuki Kitagawa,
  "Retrieving Arbitrary XML Fragments from Structured Peer-to-Peer Networks",
  Proc. Joint Conference of 9th Asia-Pacific Web Conference and 8th International Conference on Web-Age Information Management (APWeb/WAIM 2007), LNCS 4505, pp. 317-328, HuangShan (Yellow Mountains), China, June 2007.
• Masafumi Hamamoto and Hiroyuki Kitagawa,
  "Locality-aware Ratio Rule Mining",
  Proc. 4th International Conference on Fuzzy Systems and Knowledge Discovery (FSKD 2007), Vol. 2, pp. 693-698, Haikou, China, August 2007.
• Yousuke Watanabe, Shinichi Yamada, Hiroyuki Kitagawa, and Toshiyuki Amagasa,
  "Integrating a Stream Processing Engine and Databases for Persistent Streaming Data Management",
  Proc. 18th Int'l Conference on Database and Expert Systems Applications (DEXA2007), LNCS 4653, pp. 414-423, Regensburg, Germany, Sept. 2007.
• Toshiyuki Amagasa, Lianzi Wen, and Hiroyuki Kitagawa,
  "Proximity Search of XML Data using Ontology and XPath Edit Similarity",
  Proc. 18th Int'l Conference on Database and Expert Systems Applications (DEXA2007), LNCS 4653, pp. 298-307, Regensburg, Germany, Sept. 2007.
• Toshiyuki Amagasa, Kentarou Kido, and Hiroyuki Kitagawa,
  "Querying XML Data using PC Cluster System",
  Proc. 2nd International Workshop on XML Data Management Tools and Techniques (XANTEC'07) in conjunction with DEXA 2007, pp. 5-9, Regensburg, Germany, Sept. 2007.
• Hiroyuki Kitagawa and Yousuke Watanabe,
  "Stream Data Management Based on Integration of a Stream Processing Engine and Databases",
  Proc. IFIP International Conference on Network and Parallel Computing Workshops, pp. 18-22, Dalian, China, Sept. 2007. (Invited paper)
• Toshiyuki Amagasa, Hiroyuki Kitagawa, and Tatsuya Komano,
  "Constructing a Web Service System for Large-scale Meteorological Grid Data",
  3rd IEEE Int'l Conf. on e-Science and Grid Computing (e-Science 2007), pp. 118-124, Bangalore, India, December 10-13, 2007.
• Natsumi Sawa, Atsuyuki Morishima, Shigeo Sugimoto, and Hiroyuki Kitagawa,
  "Wraplet: Wrapping Your Web Contents with a Lightweight Language",
  Proc. of the 3rd IEEE International Conference on Signal-Image Technology and Internet-based Systems (SITIS'2007), Shanghai, China, December 16-19, 2007, 8 pages.
• Hiroyuki Kitagawa,
  "Stream Data Management Based on Integration of a Stream Processing Engine and Databases",
  IEEE Internatinal Workshop on Frontier of Data-Driven Engineering (FDDE 2007), Dalian, China, Sept. 16, 2007.

2006

• Sophoin Khy, Yoshiharu Ishikawa, and Hiroyuki Kitagawa,
  "Incremental Clustering Based on Novelty of On-line Documents",
  Proc. DBSJ Letters, Vol.5, No.1, pp.57-60, June 2006
• Sophoin Khy, Yoshiharu Ishikawa, and Hiroyuki Kitagawa,
  "Novelty-based Incremental Document Clustering for On-line Documents",
  Proc. 2nd International Workshop on Challenges in Web Information Retrieval and Integration (WIRI 2006), pp. 41-50, Atlanta, USA, April 2006.
• Kazuyo Narita and Hiroyuki Kitagawa,
  "Mining Frequent Itemsets from Noisy Data",
  Proc. 2nd International Special Workshop on Databases for Next-Generation Researchers (SWOD 2006), Atlanta, USA, April 2006.
• Kentarou Kido, Toshiyuki Amagasa, and Hiroyuki Kitagawa,
  "Processing XPath Queries in PC-Clusters Using XML Data Partitioning",
  Proc. 2nd International Special Workshop on Databases for Next-Generation Researchers (SWOD 2006), Atlanta, USA, April 2006.
• Yoshiharu Ishikawa, Yoji Machida, and Hiroyuki Kitagawa,
  "A Dynamic Mobility Histogram Construction Method Based on Markov Chains",
  Proc. 18th International Conference on Scientific and Statistical Database Management (SSDBM 2006), pp. 359-368, Vienna, Austria, July 2006.
• Masafumi Hamamoto and Hiroyuki Kitagawa,
  "Ratio Rule Mining with Support and Confidence Factors",
  Proc. 3rd IEEE International Conference on Intelligent Systems (IS 2006), pp. 500-505, London, UK, September 2006.
• Hiroyuki Toda, Ryoji Kataoka, and Hiroyuki Kitagawa,
  "Topic Structure Mining for Document Sets using Graph-Based Analysis",
  Proc. 17th International Conference on Database and Expert Systems Applications (DEXA 2006), LNCS 4080, pp. 327-337, Krakow, Poland, September 2006.
• Tomoko Hokama and Hiroyuki Kitagawa,
  "Extracting Mnemonic Names of People from the Web",
  Proc. 9th International Conference on Asian Digital Libraries (ICADL 2006), LNCS 4312, pp.121-130, Kyoto, Japan, November 2006.
• Hiroyuki Toda, Ko Fujimura, Ryoji Kataoka, and Hiroyuki Kitagawa,
  "Topic Structure Mining using PageRank without Hyperlinks",
  Proc. 9th International Conference on Asian Digital Libraries (ICADL 2006), LNCS 4312, pp.151-162, Kyoto, Japan, November 2006.
• Jianwei Zhang, Yoshiharu Ishikawa, Sayumi Kurokawa, and Hiroyuki Kitagawa,
  "LocalRank: A Prototype for Ranking Web Pages with Database Considering Geographical Locality",
  Proc. Eighth Asia Pacific Web Conference (APWeb 2006), LNCS 3841, pp. 1209-1213, Harbin, China, January 2006.
• Shinichi Yamada, Yousuke Watanabe, Hiroyuki Kitagawa, and Toshiyuki Amagasa,
  "Location-based Information Delivery Using Stream Processing Engine StreamSpinner",
  Proc. 7th International Conference on Mobile Data Management (MDM 2006), pp. 57, Nara, Japan, May 2006.
• Tomoko Hokama and Hiroyuki Kitagawa,
  "Detecting "Hot" Topics about a Person from Blogspace",
  Proc. The 16th European - Japanese Conference on Information Modelling and Knowledge Bases (EJC 2006), pp. 290-294. Trajanovice, Czech Republic, May 2006.
• Hiroyuki Kitagawa,
  "Stream-based Real-time Real World Data Management",
  The 23rd National Database Conference, Guangzhou, China, November 2006.

2005

• Said Mirza Pahlevi and Hiroyuki Kitagawa,
  "Conveying Taxonomy Context for Topic-Focused Web Search",
  Journal of the American Society for Information Science and Technology, Vol. 56, No. 2, 2005, pp. 173-188.
• Chunhua Cui and Hiroyuki Kitagawa,
  "Topic Activation Analysis for Document Streams Based on Document Arrival Rate and Relevance",
  Proc. 20th Annual ACM Symposium on Applied Computing (SAC 2005), Vol. 2, pp. 1089-1095, Santa Fe, March 2005.
• Biplab Kumer Sarker and Hiroyuki Kitagawa,
  "A Distributed Algorithm for Outlier Detection in a Large Database",
  Proc. 4th International Workshop on Databases in Networked Information Systems (DNIS 2005), LNCS 3433, pp. 300-309, Aizu-Wakamatsu, Japan, March 2005.
• Yousuke Watanabe and Hiroyuki Kitagawa,
  "Adaptive Query Optimization Method for Multiple Continuous Queries",
  Proc. International Special Workshop on Databases for Next Generation Researchers (SWOD 2005), pp.92-95, Tokyo, Japan, April 2005.
• Akiyoshi Nakamizo, Toshinari Iida, Atsuyuki Morishima, Shigeo Sugimoto, and Hiroyuki Kitagawa,
  "A Tool to Compute Reliable Web Links and Its Applications",
  Proc. International Special Workshop on Databases for Next Generation Researchers (SWOD 2005), pp. 146-149, Tokyo, Japan, April 2005.
• Jianwei Zhang, Yoshiharu Ishikawa and Hiroyuki Kitagawa,
  "Extended Link Analysis for Extracting Spatial Information Hubs",
  Proc. International Workshop on Challenges in Web Information Retrieval and Integration (WIRI 2005), pp. 17-22, Tokyo, Japan, April 2005.
• Masafumi Hamamoto, Hiroyuki Kitagawa, Jia-Yu Pan, and Christos Faloutsos,
  "A Comparative Study of Feature Vector-Based Topic Detection Schemes for Text Streams",
  Proc. International Workshop on Challenges in Web Information Retrieval and Integration (WIRI 2005), pp. 122-127, Tokyo, Japan, April 2005.
• Kazuyo Narita and Hiroyuki Kitagawa,
  "Mining Frequent Closed Itemsets from Privacy Preserving Data",
  Proc. IADIS International Conference e-Society 2005, pp. 355-362, Qawra, Malta, June 2005.
• Jianwei Zhang, Yoshiharu Ishikawa, Sayumi Kurokawa, and Hiroyuki Kitagawa,
  "LocalRank: Ranking Web Pages Considering Geographical Locality by Integrating Web and Databases",
  Proc. 16th International Conference on Database and Expert Systems Applications (DEXA 2005), LNCS 3588, pp. 145-155, Copenhagen, Denmark, August 2005.
• Cui Zhu, Hiroyuki Kitagawa, and Christos Faloutsos,
  "Example-Based Robust Outlier Detection in High Dimensional Datasets",
  Proc. 5th IEEE International Conference on Data Mining (ICDM 2005), Houston, November 2005.
• Hiroyuki Kitagawa,
  "StreamSpinner: An Adaptive Data Stream Processing System and Its Application",
  The Second Korea Japan Database Workshop, Awaji, Hyogo, Japan, October 2005.

2004

• Tomoaki Kajino, Hiroyuki Kitagawa, and Yoshiharu Ishikawa,
  "Requirement Specification and Derivation of ECA Rules for Integrating Multiple Dissemination-Based Information Sources",
  Special Section on the 2002 IEICE Excellent Paper Award,
  IEICE Transactions on Information and Systems, Vol. E87-D, No. 1, pp. 3-14, January 2004. (Invited Paper)
• Ryo Matsushita, Hiroyuki Kitagawa, and Yoshiharu Ishikawa,
  "Feature-based Distributed Object Search Using Signatures in Peer-to-Peer Environments",
  Proc. 19th Annual ACM Symposium on Applied Computing (SAC 2004), Nicosia, Cyprus, pp. 729-734, March 2004.
• Yousuke Watanabe and Hiroyuki Kitagawa,
  "A Multiple Continuous Query Optimization Method Based on Query Execution Pattern Analysis",
  Proc. 9th International Conference on Database Systems for Advanced Applications (DASFAA 2004), LNCS 2973, Jeju Island, Korea, pp. 443-456, March 2004.
• Takako Hashimoto, Takashi Katooka, Atsushi Iizawa, and Hiroyuki Kitagawa,
  "Significant Scene Extraction Method Using Situation Importance",
  Proc. 6th International Workshop on Multimedia Network Systems and Applications (MNSA 2004), Tokyo, Japan, pp. 248-253, March 2004.
• Atsuyuki Morishima, Hiroyuki Kitagawa, and Akira Matsumoto,
  "A Machine Learning Approach to Rapid Development of XML Mapping Queries",
  Proc. 20th IEEE International Conference on Data Engineering (ICDE 2004), Boston, pp. 276-287, March 2004.
• Takanori Mouri and Hiroyuki Kitagawa,
  "Extracting New Topic Contents from Hidden Web Sites",
  Proc. IEEE International Conference on Information Technology (ITCC 2004), Las Vegas, pp. 314-319, April 2004.
• Cui Zhu, Hiroyuki Kitagawa, Spiros Papadimitriou, and Christos Faloutsos,
  "OBE: Outlier by Example",
  Proc. 8th Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD 2004), Sydney, Australia, pp. 222-234, May 2004.
• Jia-Yu Pan, Hiroyuki Kitagawa, Christos Faloutsos, and Masafumi Hamamoto,
  "AutoSplit: Fast and Scalable Discovery of Hidden Variables in Stream and Multimedia Databases",
  Proc. 8th Pacific-Asia Conference on Knowledge Discovery and Data Mining (PAKDD 2004), Sydney, Australia, pp. 519-528, May 2004.
• Yoshiharu Ishikawa, Yuichi Tsukamoto, and Hiroyuki Kitagawa,
  "Exracting Mobility Statistics from Indexed Spatio-Temporal Databases",
  Proc. 2nd Workshop on Spatio-Temporal Database Management (STDBM'04), Toronto, Canada, pp. 9-16, August 2004.
• Norihide Shinagawa and Hiroyuki Kitagawa,
  "Constructing XML Views over Binary Data",
  Proc. 8th International Database Engineering and Applications Symposium (IDEAS'04), Coimbra, Portugal, pp. 470-474, July 2004.
• Hiroyuki Kitagawa,
  "Integration of Streams and Multiple Continuous Query Optimization",
  ] International EWHA-JAPAN Workshop, Ewha Womans University, Seoul, Korea, August 2004.
• Hiroyuki Kitagawa,
  "Outlier Detection by Example",
  The First Korea Japan Database Workshop, Seoul, Korea, August 2004.

2003

• Spiros Papadimitirou, Hiroyuki Kitagawa, Phillip B. Gibbons, and Christos Faloutsos,
  "LOCI: Fast Outlier Detection Using the Local Correlation Integral",
  Proc. 19th IEEE International Conference on Data Engineering (ICDE 2003), Bangalore, India, pp. 315-326, March 2003.
• Said Mirza Pahlevi and Hiroyuki Kitagawa,
  "TAX-PQ: Dynamic Taxonomy Probing and Query Modification for Topic-focused Web Search",
  Proc. 8th International Conference on Database Systems for Advanced Applications (DASFAA 2003), Kyoto, Japan, pp. 91-100, March 2003.
• Paul W. H. Kwan, Kazuo Toraichi, Hiroyuki Kitagawa, and Keisuke Kameyama,
  "Approximate Query Processing for a Content-Based Image Retrieval Method",
  Proc. 14th International Conference on Database and Expert Systems Applications (DEXA 2003) (LNCS 2736), Prague, Czech, pp. 517-526, September 2003.
• Said Mirza Pahlevi and Hiroyuki Kitagawa,
  "Taxonomy-based Context Conveyance for Web Search",
  Proc. 10th International Conference on Cooperative Information Systems (CoopIS 2003), Catania, Italy, pp. 536-553, November 2003.
• Yoshiharu Ishikawa, Yuichi Tsukamoto, and Hiroyuki Kitagawa,
  "Implementation and Evaluation of an Adaptive Neighborhood Information Retrieval System for Mobile Users",
  Proc. 3rd International Workshop on Web and Wireless Geographic Information Systems (W²GIS), Roma, Italy, December 2003.

2002

• Said Mirza Pahlevi and Hiroyuki Kitagawa,
  "A Taxonomy-based Focused Retrieval Method for the Web Space",
  Proc. Pan-Yellow-Sea International Workshop on Information Technologies for Network Era (PYIWIT '02), Saga, Japan, pp. 127-134, March 2002.
• Said Mirza Pahlevi and Hiroyuki Kitagawa,
  "Taxonomy-based Adaptive Web Search Method",
  Proc. 3rd IEEE International Conference on Information Technology: Coding and Computing (ITCC 2002), Las Vegas, pp. 320-325, April 2002.
• Yoshiharu Ishikawa, Hiroyuki Kitagawa, and Tooru Kawashima
  "Continual Neighborhood Tracking for Moving Objects Using Adaptive Distances",
  Proc. International Database Engineering and Application Symposium (IDEAS'02), Edmonton, Canada, pp. 54-63, Jul. 2002.
• Atsuyuki Morishima, Takanori Mouri, and Hiroyuki Kitagawa,
  "An Example-based Web-site Construction Tool and Its Implementation",
  Proc. IASTED International Conference on Information Systems and Databases (ISDB 2002), Tokyo, Japan, pp. 136-141, Sept. 2002.
• Yoshiharu Ishikawa, Takaaki Nagai, and Hiroyuki Kitagawa,
  "Transforming XPath Queries for Bottom-Up Query Processing",
  Proc. IASTED International Conference on Information Systems and Databases (ISDB 2002), Tokyo, Japan, pp. 210-215, Sept. 2002.
• Yousuke Watanabe, Yoshinori Okamoto, Hiroyuki Kitagawa, and Yoshiharu Ishikawa,
  "VIDI: Visual Specification for Integration of Distributed Dissemination-based Information Sources",
  Proc. IASTED International Conference on Network, Parallel and Distributed Processing, and Applications (NPDPA 2002), Tsukuba, Japan, pp.217-222, Sept. 2002.
• Yoshiharu Ishikawa, Jun Kawada, and Hiroyuki Kitagawa,
  "Processing XML View Queries Including User-defined Foreign Functions on Relational Databases",
  Proc. 3rd International Conference on Web Information Systems Engineering (WISE 2002), Singapore, pp. 225-236, Dec. 2002.
• Hiroyuki Kitagawa and Atsuyuki Morishima,
  "Construction of Web Structures from Heterogeneous Information Sources",
  in Nontraditional Database Systems, Y. Kambayashi, et al. (eds.), Advanced Information Processing Technology, Vol. 5, Taylor & Francis, ISBN 0-415-30206-4, pp. 181-196, 2002.

2001

• Hiroyuki Kitagawa, Tomoyuki Kajino, and Yoshiharu Ishikawa,
  "Algebraic Service Specification and Rule Generation for Integrating Multiple Dissemination-Based Information Sources",
  Proc. 7th International Conference on Database Systems for Advanced Applications (DASFAA 2001), Hong Kong, pp. 344-351, April 2001.
• Mary F. Fernandez, Atsuyuki Morishima, and Dan Suciu
  "Efficient Evaluation of XML Middle-ware Queries."
  Proc. ACM SIGMOD 2001, May 2001.
• Norihide Shinagawa, Takaaki Nagai, Hiroyuki Kitagawa, and Yoshiharu Ishikawa,
  "Querying Geographic Data in XML via eXtensible XML Query Language X²QL",
  Proc. International Symposium on Asia GIS 2001 (CD-ROM), Tokyo, Japan, June 2001.
• Norihide Shinagawa, Kouichi Kuragaki, and Hiroyuki Kitagawa,
  "Integration of WWW Applications Based on Extensible XML Query and Processing Languages",
  Proc. 12th International Conference on Database and Expert System Applications (DEXA 2001), Munich, Germany, pp. 632-645, September 2001.
• Takako Hashimoto, Yukari Shirota, Atsushi Iizawa, and Hiroyuki Kitagawa,
  "A Rule-based Scheme to Make Personal Digests from Video Program Meta Data",
  Proc. 12th International Conference on Database and Expert System Applications (DEXA 2001), Munich, Germany, pp. 243-253, September 2001.
• Yoshiharu Ishikawa, Yibing Chen, and Hiroyuki Kitagawa
  "An On-Line Document Clustering Method Based on Forgetting Factors",
  Proc. 5th European Conference on Research and Advanced Technology for Digital Libraries (ECDL 2001), Vol. 2163 of Lecture Notes in Computer Science, Darmstadt, Germany, pp. 325-339, September 2001.
• Yoshiharu Ishikawa and Hiroyuki Kitagawa,
  "Source Description-based Approach for the Modeling of Spatial Information Integration",
  Proc. 20th International Conference on Conceptual Modeling (ER2001), Yokohama, Japan, pp. 41-55, November 2001.
• Yoshiharu Ishikawa and Hiroyuki Kitagawa,
  "Source Description-Based Approach for the Modeling of Spatial Information Integration",
  Proc. 20th International Conference on Conceptual Modeling (ER 2001), Vol. 2224 of Lecture Notes in Computer Science, pp. 41-55, Yokohama, Japan, November 2001.
• Yousuke Watanabe, Hiroyuki Kitagawa, and Yoshiharu Ishikawa,
  "Integration of Multiple Dissemination-Based Information Sources Using Source Data Arrival Properties",
  Proc. 2nd International Conference on Web Information Systems Engineering (WISE 2001), Vol. 1, Kyoto, Japan, pp. 21-30, December 2001.
• Takako Hashimoto, Yukari Shirota, Atsushi Iizawa, and Hiroyuki Kitagawa,
  "Digest Making Method Based on Turning Point Analysis",
  Proc. 2nd International Conference on Web Information Systems Engineering (WISE 2001), Vol. 1, Kyoto, Japan, pp. 83-91, December 2001.
• Norihide Shinagawa and Hiroyuki Kitagawa,
  "Extension Mechanism in Extensible XML Query Language X²QL",
  Proc. 2nd International Conference on Web Information Systems Engineering (WISE 2001), Vol. 1, Kyoto, Japan, pp. 183-192, December 2001.
• Atsuyuki Morishima and Hiroyuki Kitagawa,
  "Design and Evaluation of an Example-based Graphical Manipulation Framework for XML",
  Proc. 2nd International Conference on Web Information Systems Engineering (WISE 2001), Vol. 1, Kyoto, Japan, pp. 222-231, December 2001.
• Yoshiharu Ishikawa, Gihyong Ryu, and Hiroyuki Kitagawa,
  "Integration of Spatial Information Sources Based on Source Description Framework",
  Proc. 7th International Conference on Database Systems for Advanced Applications (DASFAA 2001), Hong Kong, pp. 160-161, April 2001.
• Atsuyuki Morishima, Seiichi Koizumi, Hiroyuki Kitagawa, and Satoshi Takano,
  "Enabling End-users to Construct Data-intensive Web-sites from XML Repositories: An Example-based Approach",
  Proc. 27th International Conference on Very Large Databases (VLDB 2001) (Demo), Roma, Italy, pp. 703-704, September 2001.

2000

• Atsuyuki Morishima, Hiroyuki Kitagawa, Hironori Mizuguchi, and Seiichi Koizumi
  "Dynamic Creation of Multimedia Web Views on Heterogeneous Information Sources",
  Proc. Thirty-Third Hawaii International Conference on System Sciences (HICSS-33) (CD-ROM), Hawaii, IEEE CS Press, January 2000.
• Atsuyuki Morishima, Seiichi Koizumi, and Hiroyuki Kitagawa
  "Drag and Drop: Amalgamation of Authoring, Querying, and Restructuring for Multimedia View Construction",
  Proc. IFIP TC2 WG2.6 5th Working Conference on Visual Database Systems (Advances in Visual Information Management), Fukuoka, Japan, Kluwer Academic Publishers, pp. 257-276, May 2000.
• Norihide Shinagawa, Hiroyuki Kitagawa, and Yoshiharu Ishikawa
  "X²QL: An eXtensible XML Query Language Supporting User-defined Foreign Functions",
  Proc. 2000 ADBIS-DASFAA Symposium on Advances in Databases and Information Systems, Prague, Czech, pp. 251-264, September 2000.
• Hironori Mizuguchi, Hiroyuki Kitagawa, Yoshiharu Ishikawa, and Atsuyuki Morishima
  "A Rule-oriented Architecture to Incorporate Dissemination-based Information Delivery into Information Integration Environments",
  Proc. 2000 ADBIS-DASFAA Symposium on Advances in Databases and Information Systems, Prague, Czech, pp. 185-199, September 2000.
• Hiroyuki Kitagawa, Atsuyuki Morishima, and Hironori Mizuguchi,
  "Integration of Heterogeneous Information Sources in InfoWeaver",
  in Advances in Multimedia and Databases for the Next Century - A Swiss/Japanese Perspective -, Y. Masunaga and S. Spaccapietra (eds.), Advanced Database Research and Development Series, Vol. 10, World Scientific, pp. 124-137, 2000.
• Kazunori Katoh, Atsuyuki Morishima, and Hiroyuki Kitagawa,
  "Agent-based Processing of Navigational Queries in InfoWeaver,"
  in Information Organization and Databases - Foundations of Data Organization -, K. Tanaka, S. Ghandeharizadeh, and Y. Kambayashi (eds.), The Kluwer International Series in Engineering and Computer Science, Vol. 579, Kluwer Academic Publishers, pp. 357-371, 2000.

1999

• Atsuyuki Morishima and Hiroyuki Kitagawa
  "A Visual User Interface for Integration of Heterogeneous Information Sources,"
  IEICE Transactions on Information and Systems, Vol. J82-D-I, No. 1, Jan. 1999, pp. 315-326 (in Japanese).
• Kazunori Katoh, Atsuyuki Morishima, and Hiroyuki Kitagawa
  "Design and Evaluation of a Navigator-based Query Processing Scheme for the World Wide Web Wrapper,"
  Information Processing Society of Japan Transactions on Databases, Vol. 40, No. SIG 6 (TOD 3), Aug. 1999, pp. 79-91 (in Japanese, with English abstract).
• Atsuyuki Morishima and Hiroyuki Kitagawa.
  "InfoWeaver: Dynamic and Tailor-Made Integration of Structured Documents, Web, and Databases,"
  Proc. ACM Digital Libraries '99, August 1999, pp. 235-236.
• Yoshiharu Ishikawa and Hiroyuki Kitagawa
  "A Semantic Caching Method Based on Linear Constraints",
  1999 International Symposium on Database Applications in Non-Traditional Environments(DANTE'99), Kyoto, Japan, November 1999, pp. 133-140.
• Norihide Shinagawa and Hiroyuki Kitagawa
  "Dynamic Generation and Browsing of Virtual WWW Space Based on User Profiles",
  Proc. of 5th International Computer Science Conference (ICSC'99), Hong Kong, China, Dec. 1999, Springer-Verlag, LNCS 1749, pp. 93-108.

1998

• Atsuyuki Morishima and Hiroyuki Kitagawa
  "NR/SD+ Data Model and Its Query Procesing --- For Integration of Structured Documents and Relational Databases," Transactions of Information Processing Society of Japan, Vol. 39, No. 4, April 1998, pp. 954-967 (in Japanese, with English Abstract).
• Hiroyuki Kitagawa and Atsuyuki Morishima
  "Integration of Heterogeneous Information Sources with WebNR/SD,"
  in Advanced Database Systems for Integration of Media and User Environments'98, World Scientific, Advanced Database Research and Development Series, Vol.9, 1998, pp. 66-71.
• Kazunori Katoh, Atsuyuki Morishima, and Hiroyuki Kitagawa
  "Navigator-based Query Processing in the World Wide Web Wrapper,"
  Proc. The 5th International Conference on Foundations of Data Organization (FODO'98), Kobe, Nov. 1998, pp. 191-199.

1997

• Atsuyuki Morishima and Hiroyuki Kitagawa,
  "A Data Modeling Approach to the Seamless Information Exchange among Structured Documents and Databases,"
  Proc. 1997 ACM Symposium on Applied Computing (ACM SAC '97), San Jose, February 1997, pp. 78-87.
• Atsuyuki Morishima and Hiroyuki Kitagawa,
  "A Data Modeling and Query Processing Scheme for Integration of Structured Document Repositories and Relational Databases,"
  Proc. 5th International Conference on Database Systems for Advanced Applications (DASFAA '97), Melbourne, Australia, April 1997, pp. 145-154.
• Hiroyuki Kitagawa, and Yoshiharu Ishikawa,
  "Flase Drop Analysis of Set Retrieval with Signature Files,"
  IEICE Transactions on Information and Systems, Vol. E80-D, No. 6, June 1997, pp. 653-664.
• Atsuyuki Morishima and Hiroyuki Kitagawa
  "Integrated Querying and Restructuring of the World Wide Web and Databases,"
  Proc. International Symposium on Digital Media Information Base (DMIB'97), Nara, Japan, Nov. 1997, pp. 262-271.

1996

• Takayuki Suzuki and Hiroyuki Kitagawa,
  "Development and Performance Analysis of a Temporal Persistent Object Store POST/C++,"
  Proc. 7th Australasian Database Conference, Melbourne, Australia, January 1996, pp.1-10.
• Yoshimi Ii and Hiroyuki Kitagawa,
  "Design, Implementation and Evaluation of a Visual Query Language for Database Systems with Version Management Function,"
  Transactions of Information Processing Society of Japan, Vol. 37, No. 1, January 1996, pp. 110-122 (in Japanese, with English Abstract).
• Hiroyuki Kitagawa, Noriyasu Watanabe, and Yoshiharu Ishikawa,
  "Design and Evaluation of Signature File Organization Incorporating Vertical and Horizontal Decomposition Schemes,"
  Proc. 7th International Conference on Database and Expert Systems Applications (DEXA '96) (Lecture Notes in Computer Science 1134), Zurich, Switzerland, Sept. 1996, Springer-Verlag, pp. 875-888.
• Hiroyuki Kitagawa and Koehi Fukushima,
  "Composite Bit-Sliced Signature File: An Efficient Access Method for Set-valued Object Retrieval,"
  Proc. International Sysmposium on Cooperative Database Systems for Advanced Applications (CODAS), Kyoto, Japan, December 1996, pp. 388-395.
• Noriyasu Watanabe and Hiroyuki Kitagawa,
  "Partitioned Bit-Sliced Signature File and Its Application to Set-valued Object Retrieval,"
  Transactions of Information Processing Society of Japan, Vol. 37, No. 12, December 1996, pp. 2314-2325 (in Japanese, with English Abstract).

1995

• Yoshiharu Ishikawa, Hiroyuki Kitagawa, and Nobuo Ohbo,
  "Cost Evaluation of Set-Valued Object Retrieval with Signature Files,"
  Transactions of Information Processing Society of Japan, Vol. 36, No. 2, February 1995, pp. 383-395 (in Japanese, with English Abstract).
• Yoshiharu Ishikawa and Hiroyuki Kitagawa,
  "Design and Performance Analysis of Indexing Schemes for Set Retrieval of Nested Objects,"
  IEICE Transactions on Information and Systems, Vol. E78-D, No. 11, November 1995, pp. 1424-1432.

1994

• Yaxin Li, Hiroyuki Kitagawa, and Nobuo Ohbo,
  "Optimization of Join-Type Queries in Nested Relational Databases,"
  IEICE Transactions on Information and Systems, Vol. E77-D, No. 6, June 1994, pp. 648-659.
• Hiroyuki Kitagawa and Yaxin Li,
  "An Optimization Algorithm for Join-Type Queries on Nested Relations and Its Evaluation,"
  Transactions of Information Processing Society of Japan, Vol. 35, Nov. 9, September 1994, pp. 1874-1887 (in Japanese, with English Abstract).
• Yaxin Li and Hiroyuki Kitagawa,
  "Join Query Optimization in Nested Relational Databases - A Generalized Query Optimization Algorithm and Its Evaluation -,"
  Proc. 47th Conference of the International Federation for Information and Documentation, Omiya, Japan, October 1994, pp. 262-266.
• Takayuki Suzuki and Hiroyuki Kitagawa,
  "Design and Analysis of a File Manager with Page-level History Management Function,"
  Proc. 47th Conference of the International Federation for Information and Documentation, Omiya, Japan, October 1994, pp. 307-313.
• Tadamitsu Miyawaki and Hiroyuki Kitagawa,
  "A Version Management Scheme Based on the Set- Member Annotation,"
  Transactions of Information Processing Society of Japan, Vol. 35, Nov. 10, October 1994, pp. 2146-2158 (in Japanese, with English Abstract).
• Yoshiharu Ishikawa and Hiroyuki Kitagawa,
  "Analysis of Indexing Schemes to Support Set Retrieval of Nested Objects,"
  Proc. International Symposium on Advanced Database Technologies and Their Integration, Nara, Japan, October 1994, pp. 55-62.

1993

• Hiroyuki Kitagawa, Hajime Tanaka, Nobuo Ohbo, and Isao Suzuki,
  "A Version Data Model Based on the History Data Type,"
  Transactions of Information Processing Society of Japan, Vol. 34, Nov. 5, May 1993, pp. 1031-1044 (in Japanese, with English Abstract).
• Yoshiharu Ishikawa, Hiroyuki Kitagawa, and Nobuo Ohbo,
  "Evaluation of Signature Files as Set Access Facilities in OODBs,"
  Proc. 1993 ACM SIGMOD International Conference on Management of Data, Washington, D. C., May 1993, ACM Press, pp. 247-256.
• Hiroyuki Kitagawa, Yoshiaki Fukushima, Yoshiharu Ishikawa, and Nobuo Ohbo,
  "Estimation of False Drops in Set-Valued Object Retrieval with Signature Files,"
  Proc. 4th International Conference on Foundations of Data Organization and Algorithms (Lecture Notes in Computer Science 730), Chicago, October 1993, Springer-Verlag, pp. 146-163.