| 2012 | DCAI | A Predictive Search Method of FAQ Corresponding to a User's Incomplete Inquiry by Statistical Model of Important Words Co-occurrence. | Masaki Samejima, Yuichi Saito, Masanori Akiyoshi, Hironori Oka |
| 2012 | GLOBECOM | Network construction management for emergency communication system SKYMESH in large scale disaster. | Hiraku Okada, Hironori Oka, Kenichi Mase |
| 2010 | DCAI | An Identification Method of Inquiry E-mails to the Matching FAQ for Automatic Question Answering. | Kota Itakura, Masahiro Kenmotsu, Hironori Oka, Masanori Akiyoshi |
| 2010 | DCAI | Information Extraction from Heterogenous Web Sites Using Additional Search of Related Contents Based on a User's Instantiated Example. | Yuki Mitsui, Hironori Oka, Masanori Akiyoshi, Norihisa Komoda |
| 2010 | DCAI | Information Extraction from Heterogeneous Web Sites Using Clue Complement Process Based on a User's Instantiated Example. | Junya Shimada, Hironori Oka, Masanori Akiyoshi, Norihisa Komoda |
| 2005 | ETFA | Negotiation protocol for bilateral semi-competitive trading environments. | Masanori Akiyoshi, Mariko Matsumoto, Hironori Oka, Norihisa Komoda |
| 2003 | ETFA | A procurement negotiation method using objective relaxation knowledge for appeasement. | Hironori Oka, Yoshitomo Ikkai, Norihisa Komoda |
| 2001 | ETFA | A bilateral negotiation method using satisfying level with knowledge of purpose analysis. | Hironori Oka, Tsutomu Hasegawa, Yoshitomo Ikkai, Norihisa Komoda |
| 2001 | SMC | A negotiation method using improvement knowledge for bilateral exchange and distribution negotiation. | Tsutomu Hasegawa, Hironori Oka, Yoshitomo Ikkai, Norihisa Komoda |