| 2019 | HCI | Evaluation Index to Find Relevant Papers: Improvement of Focused Citation Count. | Tetsuya Nakatoh, Sachio Hirokawa |
| 2018 | ICCE | Good Students Look Back Previous Pages. | Sachio Hirokawa |
| 2017 | HCI | Analysis of the Quality of Academic Papers by the Words in Abstracts. | Tetsuya Nakatoh, Kenta Nagatani, Toshiro Minami, Sachio Hirokawa, Takeshi Nanri, Miho Funamori |
| 2017 | IIWAS | Cluster analysis of scientific citation context. | Tetsuya Nakatoh, Kenta Nagatani, Kumiko Kanekawa, Takahiro Suzuki, Sachio Hirokawa |
| 2016 | HCI | Support Vector Mind Map of Wine Speak. | Brendan Flanagan, Sachio Hirokawa |
| 2016 | HCI | A Visual Citation Search Engine. | Tetsuya Nakatoh, Hayato Nakanishi, Toshiro Minami, Kensuke Baba, Sachio Hirokawa |
| 2016 | ICCE | Student Behavior in Computer Simulation Practices by Pair Programming and Flip Teaching. | Satoshi Suzuki, Sachio Hirokawa, Shinji Mukoyama, Ryo Uehara, Hiroyuki Ogata |
| 2016 | ICCE | Measuring & Evaluating Digital Textbooks through Quizzes. | Chengjiu Yin, Jane Yin-Kim Yau, Noriko Uosaki, Sachio Hirokawa, Etsuko Kumamoto |
| 2016 | IIWAS | Standard measure and SVM measure for feature selection and their performance effect for text classification. | Yusuke Adachi, Naoya Onimura, Takanori Yamashita, Sachio Hirokawa |
| 2016 | LAK | Learning Activity Features of High Performance Students. | Fumiya Okubo, Sachio Hirokawa, Misato Oi, Chengjiu Yin, Atsushi Shimada, Kentaro Kojima, Masanori Yamada, Hiroaki Ogata |
| 2015 | HCI | Predicting and Visualizing Wine Characteristics Through Analysis of Tasting Notes from Viewpoints. | Brendan Flanagan, Nao Wariishi, Takahiko Suzuki, Sachio Hirokawa |
| 2015 | HCI | Prediction of Learner Native Language by Writing Error Pattern. | Brendan Flanagan, Chengjiu Yin, Takahiko Suzuki, Sachio Hirokawa |
| 2015 | ICCE | Visualization of e-Book Learning Logs. | Sachio Hirokawa, Chengjiu Yin, Jingyun Wang, Misato Oi, Hiroaki Ogata |
| 2015 | ICCE | Identifying and Analyzing the Learning Behaviors of Students using e-Books. | Chengjiu Yin, Fumiya Okubo, Atsushi Shimada, Misato Oi, Sachio Hirokawa, Hiroaki Ogata |
| 2015 | ICCE | Analyzing the Features of Learning Behaviors of Students using e-Books. | Chengjiu Yin, Fumiya Okubo, Atsushi Shimada, Misato Oi, Sachio Hirokawa, Masanori Yamada, Kentaro Kojima, Hiroaki Ogata |
| 2015 | KES | Visualization of Key Factor Relation in Clinical Pathway. | Takanori Yamashita, Brendan Flanagan, Yoshifumi Wakata, Satoshi Hamai, Yasuharu Nakashima, Yukihide Iwamoto, Naoki Nakashima, Sachio Hirokawa |
| 2014 | CSEDU | Efficiency of LSA and K-means in Predicting Students' Academic Performance Based on Their Comments Data. | Shaymaa E. Sorour, Tsunenori Mine, Kazumasa Goda, Sachio Hirokawa |
| 2014 | FIE | Predicting students' grades based on free style comments data by artificial neural network. | Shaymaa E. Sorour, Tsunenori Mine, Kazumasa Goda, Sachio Hirokawa |
| 2014 | HCI | Learning Winespeak from Mind Map of Wine Blogs. | Sachio Hirokawa, Brendan Flanagan, Takahiko Suzuki, Chengjiu Yin |
| 2014 | ICCE | Real-time Feedback Systems in a Foreign Language Teaching: A Case of Presentation Course. | Yuichi Ono, Manabu Ishihara, Sachio Hirokawa, Mitsuo Yamashiro |
| 2014 | ICCE | Learning by "Search & Log". | Chengjiu Yin, Brendan Flanagan, Sachio Hirokawa |
| 2014 | SMC | Real time text-based feedback systems from frequency-based feedback to mindmap feedback in foreign language teaching. | Yuichi Ono, Sachio Hirokawa, Manabu Ishihara, Mitsuo Yamashiro |
| 2013 | ICCE | A Private Cloud Environment for Teaching Search Engine Construction. | Eisuke Ito, Brendan Flanagan, Chengjiu Yin, Tetsuya Nakatoh, Sachio Hirokawa |
| 2013 | ICCE | An SNS-based Literature Review System for conducting a Research Survey. | Chengjiu Yin, Jane Yin-Kim Yau, Sachio Hirokawa, Yoshiyuki Tabata |
| 2013 | SIGITE | Correlation of grade prediction performance and validity of self-evaluation comments. | Kazumasa Goda, Sachio Hirokawa, Tsunenori Mine |
| 2012 | IIWAS | Feature words that classify problem sentence in scientific article. | Toshihiko Sakai, Sachio Hirokawa |
| 2011 | CSEDU | A Progressive Data Warehouse of Institutional Research with Web API and Mashup Visualization. | Masao Mori, Toshie Tanaka, Sachio Hirokawa |
| 2011 | ICCE | A Support System for Research Trend Survey of Scientific Literature. | Chengjiu Yin, Yoshiyuki Tabata, Kiyota Hashimoto, Tetsuya Nakatoh, Sachio Hirokawa |
| 2011 | KES | Finding Top-N Chance Patterns with KeyGraph $^{\tiny \textregistered}$ -Based Importance. | Yoshiaki Okubo, Makoto Haraguchi, Sachio Hirokawa |
| 2011 | MEDI | Search and Analysis of Bankruptcy Cause by Classification Network. | Sachio Hirokawa, Takahiro Baba, Tetsuya Nakatoh |
| 2010 | KES | Formal Concept Analysis of Medical Incident Reports. | Takahiro Baba, Lucing Liu, Sachio Hirokawa |
| 2009 | KES | Time Series Analysis of R&D Team Using Patent Information. | Yurie Iino, Sachio Hirokawa |
| 2008 | CISIS | Dynamic Thesaurus Construction from English-Japanese Dictionary. | Yoshihiro Shimoji, Taiki Wada, Sachio Hirokawa |
| 2007 | HCI | Multiple Viewed Search Engine for an e-Journal - A Case Study on Zoological Science. | Takahiro Seki, Taiki Wada, Yasuhiro Yamada, Nozomi Ytow, Sachio Hirokawa |
| 2004 | WWW | Testbed for information extraction from deep web. | Yasuhiro Yamada, Nick Craswell, Tetsuya Nakatoh, Sachio Hirokawa |
| 2003 | IJCAI | Expressive Power of Tree and String Based Wrappers. | Daisuke Ikeda, Yasuhiro Yamada, Sachio Hirokawa |
| 2003 | PAKDD | Extraction of Tag Tree Patterns with Contractible Variables from Irregular Semistructured Data. | Tetsuhiro Miyahara, Yusuke Suzuki, Takayoshi Shoudai, Tomoyuki Uchida, Sachio Hirokawa, Kenichi Takahashi, Hiroaki Ueda |
| 2002 | DIS | Automatic Wrapper Generation for Multilingual Web Resources. | Yasuhiro Yamada, Daisuke Ikeda, Sachio Hirokawa |
| 2001 | DIS | Eliminating Useless Parts in Semi-structured Documents Using Alternation Counts. | Daisuke Ikeda, Yasuhiro Yamada, Sachio Hirokawa |
| 2001 | DIS | SCOOP: A Record Extractor without Knowledge on Input. | Yasuhiro Yamada, Daisuke Ikeda, Sachio Hirokawa |
| 2000 | DIS | Extraction Positive and Negative Keywords for Web Communities. | Daisuke Ikeda, Sachio Hirokawa |
| 1999 | DIS | Developing a Knowledge Network of URLs. | Daisuke Ikeda, Tsuyoshi Taguchi, Sachio Hirokawa |
| 1998 | DIS | KN on ZK - Knowledge Network on Network Note Pad ZK. | Sachio Hirokawa, Tsuyoshi Taguchi |
| 1998 | KES | Living with ZK-an approach towards communication with analogue messages. | Toshiro Minami, H. Sazuka, Sachio Hirokawa, Takeshi Ohtani |
| 1992 | LFCS | Balanced Formulas, BCK-Minimal Formulas and Their Proofs. | Sachio Hirokawa |