Density-based adaptive spatial clustering algorithm for identifying local high-density areas in georeferenced documents. - Tatsuhiro Sakai; 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)

Summarizing Results of Keyword Search on Social Photos Using Clustering-Based Burst Detection. - Tatsuhiro Sakai; Keiichi Tamura (IIAI-AAI, 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)

Time series classification using MACD-Histogram-based SAX and its performance evaluation. - Keiichi Tamura; Tatsuhiro Sakai; Takumi Ichimura (SMC, 2016)

Photo image classification using pre-trained deep network for density-based spatiotemporal analysis system. - Tatsuhiro Sakai; Keiichi Tamura; Hajime Kitakampd; Toshiyuki Takezawa (IWCIA, 2017)

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)

Classifying Sightseeing Tweets Using Convolutional Neural Networks with Multi-channel Distributed Representation. - Shuichi Hashida; Keiichi Tamura; Tatsuhiro Sakai (SMC, 2018)

Analyzing Geo-tagged Tweets about COVID-19 in Japan using MACD-Histogram-based Burst Detection. - Tatsuhiro Sakai; Keiichi Tamura (IIAI-AAI, 2020)

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