| 2013 | WSDM | Geo topic model: joint modeling of user's activity area and interests for location recommendation. | Takeshi Kurashima, Tomoharu Iwata, Takahide Hoshide, Noriko Takaya, Ko Fujimura |
| 2012 | SIGIR | Improving tweet stream classification by detecting changes in word probability. | Kyosuke Nishida, Takahide Hoshide, Ko Fujimura |
| 2011 | APWEB | Dynamic Network Motifs: Evolutionary Patterns of Substructures in Complex Networks. | Yutaka Kabutoya, Kyosuke Nishida, Ko Fujimura |
| 2011 | CHI | Document area identification for extending books without markers. | Akihiro Miyata, Ko Fujimura |
| 2011 | IJCAI | User Similarity from Linked Taxonomies: Subjective Assessments of Items. | Makoto Nakatsuji, Yasuhiro Fujiwara, Toshio Uchiyama, Ko Fujimura |
| 2010 | CIKM | Travel route recommendation using geotags in photo sharing sites. | Takeshi Kurashima, Tomoharu Iwata, Go Irie, Ko Fujimura |
| 2010 | CIKM | Classical music for rock fans?: novel recommendations for expanding user interests. | Makoto Nakatsuji, Yasuhiro Fujiwara, Akimichi Tanaka, Toshio Uchiyama, Ko Fujimura, Toru Ishida |
| 2010 | CIKM | Hierarchical auto-tagging: organizing Q&A knowledge for everyone. | Kyosuke Nishida, Ko Fujimura |
| 2010 | ICWSM | Effective Question Recommendation Based on Multiple Features for Question Answering Communities. | Yutaka Kabutoya, Tomoharu Iwata, Hisako Shiohara, Ko Fujimura |
| 2010 | WISE | Modeling Multiple Users' Purchase over a Single Account for Collaborative Filtering. | Yutaka Kabutoya, Tomoharu Iwata, Ko Fujimura |
| 2009 | ECIR | Discovering Association Rules on Experiences from Large-Scale Blog Entries. | Takeshi Kurashima, Ko Fujimura, Hidenori Okuda |
| 2008 | WWW | Topigraphy: visualization for large-scale tag clouds. | Ko Fujimura, Shigeru Fujimura, Tatsushi Matsubayashi, Takeshi Yamada, Hidenori Okuda |
| 2004 | CARDIS | An Optimistic Fair Exchange Protocol for Trading Electronic Rights. | Masayuki Terada, Makoto Iguchi, Masayuki Hanadate, Ko Fujimura |
| 2000 | CARDIS | Copy Prevention Scheme for Rights Trading Infrastructure. | Masayuki Terada, Hiroshi Kuno, Masayuki Hanadate, Ko Fujimura |
| 2000 | ICPADS | A world wide supermarket scheme using rights trading system. | Ko Fujimura, Masayuki Terada, Jun Sekine |