The Optimization Strategy for Query Evaluation in RDB/V1 - Akifumi Makinouchi; Masayoshi Tezuka; Hajime Kitakami; S. Adachi (VLDB, 1981)

A Methodology for Implementation of a Knowledge Acquisition System. - Hajime Kitakami; Susumu Kunifuji; Taizo Miyachi; Koichi Furukawa (SLP, 1984)

A Knowledge Assimilation Method for Logic Databases. - Taizo Miyachi; Susumu Kunifuji; Hajime Kitakami; Koichi Furukawa; Akikazu Takeuchi; Haruo Yokota (New Gener. Comput., 1984)

Term Indexing for Retrieval by Unification. - Haruo Yokota; Hajime Kitakami; Akira Hattori (ICDE, 1989)

Toward Unification of Taxonomy Databases in a Distributed Environment. - Hajime Kitakami; Yoshio Tateno; Takashi Gojobori (ISMB, 1994)

YAMATO and ASUKA: DNA database management system. - Hajime Kitakami; Tadasu Shin-I; Kazuho Ikeo; Yoshihiro Ugawa; Naruya Saitou; Takashi Gojobori; Yoshio Tateno (HICSS (5), 1995)

An Intelligent System for Integrating Autonomous Nomenclature Databases in Semantic Heterogenity. - Hajime Kitakami; Yasuma Mori; Masatoshi Arikawa (DEXA, 1996)

A Biological Taxonomy Database System an World-Wide Web. - Hajime Kitakami; Yasuma Mori; Yoshio Tateno; Takashi Gojobori (German Conference on Bioinformatics, 1996)

An Integration Methodology for Autonomous Taxonomy Databases Using Priorities. - Hajime Kitakami; Yasuma Mori; Masatoshi Arikawa; Akira Sato (DASFAA, 1997)

Constraint Satisfaction for Reconciling Heterogeneous Tree Databases. - Hajime Kitakami; Mitsuko Nishimoto (DEXA, 2000)

An impression-based retrieval system of music collection. - Akira Sato; Junichi Ogawa; Hajime Kitakami (KES, 2000)

Modified PrefixSpan Method for Motif Discovery in Sequence Databases. - Hajime Kitakami; Tomoki Kanbara; Yasuma Mori; Susumu Kuroki; Yukiko Yamazaki (PRICAI, 2002)

Design and Implementation of Parallel Modified PrefixSpan Method. - Toshihide Sutou; Keiichi Tamura; Yasuma Mori; Hajime Kitakami (ISHPC, 2003)

Dynamic Load Balancing for Parallel Modified PrefixSpan. - Makoto Takaki; Keiichi Tamura; Toshihide Sutou; Hajime Kitakami (PDPTA, 2004)

New Dynamic Load Balancing for Parallel Modified PrefixSpan. - Makoto Takaki; Keiichi Tamura; Toshihide Sutou; Hajime Kitakami (ICDE Workshops, 2005)

A New Dynamic Load Balancing Technique for Parallel Modified PrefixSpan with Distributed Worker Paradigm and Its Performance Evaluation. - Makoto Takaki; Keiichi Tamura; Toshihide Sutou; Hajime Kitakami (ISHPC, 2005)

Extraction for Frequent Sequential Patterns with Minimum Varaible-Wildcard Regions. - Tomoyuki Kato; Hajime Kitakami; Makoto Takaki; Keiichi Tamura; Yasuma Mori; Susumu Kuroki (PDPTA, 2006)

Dynamic Load Balancing Technique for Modified PrefixSpan on a Grid Environment with Distributed Worker Model. - Makoto Takaki; Keiichi Tamura; Hajime Kitakami (PDPTA, 2006)

A Extraction Method of Overlapping Cluster Based on Network Structure Analysis. - Makoto Takaki; Keiichi Tamura; Yasuma Mori; Hajime Kitakami (Web Intelligence/IAT Workshops, 2007)

Method for Extracting Frequent Communities from Blog User Spaces. - Makoto Takaki; Yasuma Mori; Keiichi Tamura; Susumu Kuroki; Hajime Kitakami (PDPTA, 2007)

Extraction of Ambiguous Sequential Patterns with Least Minimum Generalization from Mismatch Clusters. - Kotaro Araki; Keiichi Tamura; Tomoyuki Kato; Yasuma Mori; Hajime Kitakami (SITIS, 2007)

A Stepwise Generalization Method for Extracting Minimum Generalized Set from Mismatch Cluster. - Hiroaki Kimura; Hajime Kitakami; Kotaro Araki; Keiichi Tamura (BIOCOMP, 2008)

Parallel Construction Method of a Disk-Based Suffix Tree on a PC Cluster. - Yusuke Sawada; Keiichi Tamura; Kotaro Araki; Makoto Takaki; Hajime Kitakami (PDPTA, 2008)

A Method for Constructing Disk-based Indexes for 3-D Protein Structure Databases. - Yoshifumi Takahashi; Susumu Kuroki; Keiichi Tamura; Hajime Kitakami (IKE, 2009)

Extracting Similar Subsequences by Gibbs Sampling with Distributed MGG. - Nobuhisa Kono; Hajime Kitakami; Keiichi Tamura; Yasuma Mori (PDPTA, 2009)

Mining Minimum Generalized Set Based on Multiple Alignments from Mismatch Cluster. - Kazuya Miyahara; Hajime Kitakami; Yoshifumi Takahashi; Keiichi Tamura; Susumu Kuroki (BIOCOMP, 2010)

Searching for Index-based Similar Substructure Using RMSD in Protein Structure Databases. - Yoshifumi Takahashi; Susumu Kuroki; Keiichi Tamura; Hajime Kitakami (IKE, 2010)

Modified EO-based evolutionary algorithm for reducing crossovers of reconciliation graph. - Natsumi Hara; Keiichi Tamura; Hajime Kitakami (NaBIC, 2010)

Optimal protein structure alignment using modified extremal optimization. - Akihiro Nakada; Keiichi Tamura; Hajime Kitakami (SMC, 2012)

Clustering-based burst-detection algorithm for web-image document stream on social media. - Shingo Tamura; Keiichi Tamura; Hajime Kitakami; Kaishi Hirahara (SMC, 2012)

Parallel processing for stepwise generalisation method on multi-core PC cluster. - Shinpei Yagi; Keiichi Tamura; Hajime Kitakami (Int. J. Knowl. Web Intell., 2012)

Location-based burst detection algorithm for georeferenced document streams based on user's moving direction. - Tomoki Matsui; Keiichi Tamura; Hajime Kitakami (IWCIA, 2013)

Parallel processing of approximate sequence matching using disk-based suffix tree on multi-core CPU. - Yosuke Watanuki; Keiichi Tamura; Hajime Kitakami; Yoshifumi Takahashi (IWCIA, 2013)

Population-based Modified Extremal Optimization for Contact Map Overlap Maximization Problem. - Akihiro Nakada; Keiichi Tamura; Hajime Kitakami; Yoshifumi Takahashi (IIAI-AAI, 2013)

Detecting Location-Based Enumerating Bursts in Georeferenced Micro-Posts. - Keiichi Tamura; Hajime Kitakami (IIAI-AAI, 2013)

Density-based adaptive spatial clustering algorithm for identifying local high-density areas in georeferenced documents. - Tatsuhiro Sakai; Keiichi Tamura; Hajime Kitakami (SMC, 2014)

A new parallelization model for detecting temporal bursts in large-scale document streams on a multi-core CPU. - Keiichi Tamura; Hajime Kitakami (SMC, 2014)

Identifying main topics in density-based spatial clusters using network-based representative document extraction. - Tatsuhiro Sakai; Keiichi Tamura; Hajime Kitakami (IWCIA, 2015)

A new distributed modified extremal optimization for optimizing protein structure alignment. - Keiichi Tamura; Hajime Kitakami; Tatsuhiro Sakai; Yoshifumi Takahashi (IWCIA, 2015)

Emergency Situation Awareness During Natural Disasters Using Density-Based Adaptive Spatiotemporal Clustering. - Tatsuhiro Sakai; Keiichi Tamura; Hajime Kitakami (DASFAA Workshops, 2015)

Real-time Local Topic Extraction using Density-based Adaptive Spatiotemporal Clustering for Enhancing Local Situation Awareness. - Tatsuhiro Sakai; Keiichi Tamura; Shota Kotozaki; Tsubasa Hayashida; Hajime Kitakami (KDIR, 2015)

Extracting Topic-Related Photos in Density-Based Spatiotemporal Analysis System for Enhancing Situation Awareness. - Tatsuhiro Sakai; Keiichi Tamura; Hajime Kitakami (IIAI-AAI, 2015)

Identifying Local Temporal Burstiness Using MACD Histogram. - Keiichi Tamura; Tomoki Matsui; Hajime Kitakami; Tatsuhiro Sakai (SMC, 2015)

Contact map overlap maximization using adaptive distributed modified extremal optimization. - Keiichi Tamura; Hajime Kitakami; Tatsuhiro Sakai (IWCIA, 2016)

Location-Based Temporal Burst Detection Using Outlier Factors in Geo-Tagged Tweets. - Keiichi Tamura; Tatsuhiro Sakai; Hajime Kitakami (IIAI-AAI, 2016)

Cell-Based DBSCAN Algorithm Using Minimum Bounding Rectangle Criteria. - Tatsuhiro Sakai; Keiichi Tamura; Hajime Kitakami (DASFAA Workshops, 2017)

Adaptive distributed modified extremal optimisation for maximising contact map overlap and its performance evaluation. - Keiichi Tamura; Hajime Kitakami; Tatsuhiro Sakai (Int. J. Comput. Intell. Stud., 2017)

Density-based Multimodal Spatial Clustering using Pre-trained Deep Network for Extracting Local Topics. - Tatsuhiro Sakai; Keiichi Tamura; Hajime Kitakami; Toshiyuki Takezawa (GeoRich@SIGMOD, 2018)

Anytime Algorithm for Cell-based DBSCAN by Connecting Randomly Selected Cells. - Tatsuhiro Sakai; Keiichi Tamura; Hajime Kitakami; Toshiyuki Takezawa (IIAI-AAI, 2020)