| 2009 | PDPTA | Self-Timed Power Gating for Ultra-Low-Power Pipeline Circuit. | Shuji Sannomiya, Kei Miyagi, Keiichi Sakai, Makoto Iwata, Hiroaki Nishikawa |
| 2008 | PDPTA | A Software-Defined ADC and DAC on Data-Driven Processor. | Keisuke Koito, Keiichi Sakai, Makoto Iwata |
| 2008 | PDPTA | Autonomous Power-Supply Control for Ultra-Low-Power Self-Timed Pipeline. | Kei Miyagi, Shuji Sannomiya, Keiichi Sakai, Makoto Iwata, Hiroaki Nishikawa |
| 2008 | PDPTA | A Data-Driven On-Chip Simulation Module and Its FPGA Implementation. | Shuji Sannomiya, Naoya Kagawa, Keiichi Sakai, Makoto Iwata |
| 2003 | IPAS | Trajectory recognition using state transition learning. | Tadashi Ae, Keiichi Sakai, Keiji Otaka, Nguyen Duy Thien Chuong, Yuuki Obara |
| 1998 | KES | Hardware of structured brain computer. | Tadashi Ae, Keiichi Sakai, Hiroyuki Araki, Naoya Honda |
| 1996 | COLING | A CD-ROM Retrieval System with Multiple Dialogue Agents. | Keiichi Sakai, Tsuyoshi Yagisawa, Minoru Fujita |
| 1994 | Interspeech | Robust discourse processing considering misrecognition in spoken dialogue system. | Keiichi Sakai, Yuji Ikeda, Minoru Fujita |