| 2018 | SMC | Classifying Sightseeing Tweets Using Convolutional Neural Networks with Multi-channel Distributed Representation. | Shuichi Hashida, Keiichi Tamura, Tatsuhiro Sakai |
| 2018 | SIGMOD | Density-based Multimodal Spatial Clustering using Pre-trained Deep Network for Extracting Local Topics. | Tatsuhiro Sakai, Keiichi Tamura, Hajime Kitakami, Toshiyuki Takezawa |
| 2017 | DASFAA | Cell-Based DBSCAN Algorithm Using Minimum Bounding Rectangle Criteria. | Tatsuhiro Sakai, Keiichi Tamura, Hajime Kitakami |
| 2016 | SMC | Time series classification using MACD-Histogram-based SAX and its performance evaluation. | Keiichi Tamura, Tatsuhiro Sakai, Takumi Ichimura |
| 2015 | DASFAA | Emergency Situation Awareness During Natural Disasters Using Density-Based Adaptive Spatiotemporal Clustering. | Tatsuhiro Sakai, Keiichi Tamura, Hajime Kitakami |
| 2015 | IC3K | 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 |
| 2015 | SMC | Identifying Local Temporal Burstiness Using MACD Histogram. | Keiichi Tamura, Tomoki Matsui, Hajime Kitakami, Tatsuhiro Sakai |
| 2014 | SMC | Density-based adaptive spatial clustering algorithm for identifying local high-density areas in georeferenced documents. | Tatsuhiro Sakai, Keiichi Tamura, Hajime Kitakami |