| 1998 | Interspeech | Concept-driven speech understanding incorporated with a statistic language model. | Akito Nagai, Yasushi Ishikawa |
| 1997 | Interspeech | Speech understanding based on integrating concepts by conceptual dependency. | Akito Nagai, Yasushi Ishikawa |
| 1996 | ICASSP | Integration of concept-driven semantic interpretation with speech recognition. | Akito Nagai, Yasushi Ishikawa, Kunio Nakajima |
| 1994 | Interspeech | A semantic interpretation based on detecting concepts for spontaneous speech understanding. | Akito Nagai, Yasushi Ishikawa, Kunio Nakajima |
| 1993 | ICASSP | ATREUS: a comparative study of continuous speech recognition systems at ATR. | Akito Nagai, Kouichi Yamaguchi, Shigeki Sagayama, Akira Kurematsu |
| 1993 | Interspeech | ATREUS: a speech recognition front-end for a speech translation system. | Shigeki Sagayama, Jun-ichi Takami, Akito Nagai, Harald Singer, Kouichi Yamaguchi, Kazumi Ohkura, Kenji Kita, Akira Kurematsu |
| 1992 | Interspeech | Hardware implementation of realtime 1000-word HMM-LR continuous speech recognition. | Akito Nagai, Kenji Kita, Toshiyuki Hanazawa, Tadashi Suzuki, Tomohiro Iwasaki, Tsuyoshi Kawabata, Kunio Nakajima, Kiyohiro Shikano, Tsuyoshi Morimoto, Shigeki Sagayama, Akira Kurematsu |
| 1992 | Interspeech | The SSS-LR continuous speech recognition system: integrating SSS-derived allophone models and a phoneme-context-dependent LR parser. | Akito Nagai, Jun-ichi Takami, Shigeki Sagayama |
| 1991 | Interspeech | Phoneme-context-dependent LR parsing algorithms for HMM-based continuous speech recognition. | Akito Nagai, Shigeki Sagayama, Kenji Kita |