| 2026 | LREC | Construction of Japanese Prefectural Assembly Minutes Datasets across Three Electoral Terms: Comparative Analysis of 2011, 2015, and 2019 Four-Year Periods. | Keiichi Takamaru, Hokuto Ototake, Yuzu Uchida, Yasutomo Kimura |
| 2020 | LREC | Extraction of the Argument Structure of Tokyo Metropolitan Assembly Minutes: Segmentation of Question-and-Answer Sets. | Keiichi Takamaru, Yasutomo Kimura, Hideyuki Shibuki, Hokuto Ototake, Yuzu Uchida, Kotaro Sakamoto, Madoka Ishioroshi, Teruko Mitamura, Noriko Kando |
| 2019 | IJCAI | Influence of Classifiers and Encoders on Argument Classification in Japanese Assembly Minutes. | Yasutomo Kimura, Hideyuki Shibuki, Hokuto Ototake, Yuzu Uchida, Keiichi Takamaru, Kotaro Sakamoto, Madoka Ishioroshi, Teruko Mitamura, Noriko Kando |
| 2004 | Interspeech | Evaluation of a threshold for detecting local slower phrases in Japanese spontaneous conversational speech. | Keiichi Takamaru |
| 2002 | Interspeech | Evaluation of the method to detect Japanese local speech rate deceleration applying the variable threshold with a constant term. | Keiichi Takamaru, Makoto Hiroshige, Kenji Araki, Koji Tochinai |
| 2001 | Interspeech | Detecting Japanese local speech rate deceleration in spontaneous conversational speech using a variable threshold. | Keiichi Takamaru, Makoto Hiroshige, Kenji Araki, Koji Tochinai |
| 2000 | Interspeech | A proposal of a model to extract Japanese voluntary speech rate control. | Keiichi Takamaru, Makoto Hiroshige, Kenji Araki, Koji Tochinai |