JOURNALS
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        Yoshiharu Ishikawa, Yoji Machida, and Hiroyuki Kitagawa,
        
        
 "A Dynamic Mobility Histogram Construction Method Based on Markov Chains,"
 IEICE Transactions on Information and Systems (Japanese Edition), Vol. J90-D, No. 2, pp. 311-324, February 2007.
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        Jianwei Zhang, Yoshiharu Ishikawa, and Hiroyuki Kitagawa,
        
        
 "Record Extraction from Large-scale Text Resources Considering Topics,"
 IPSJ Transactions on Databases, Vol. 48, No. SIG 14(TOD 35), pp. 107-123, September 2007. (in Japanese)
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        Mikine Hasegawa and Yoshiharu Ishikawa,
        
        
 "T-Scroll: A Trend Visualization System Based on Clustering of a Time-series of Documents,"
 IPSJ Transactions on Databases, Vol. 48, No. SIG 20(TOD 36), pp. 61-78, December 2007. (in Japanese)
CONFERENCES
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        Jianwei Zhang, Yoshiharu Ishikawa, and Hiroyuki Kitagawa,
        
        
 "Record Extraction Based on User Feedback and Document Selection,"
 Proceedings of the Joint Conference of the 9th Asia-Pacific Web Conference and the 8th International Conference on Web-Age Information Management (APWeb/WAIM07), LNCS 4505, pp. 574-585, Huang Shan (Yellow Mountains), China, June 2007.
 – DOI: 10.1007/978-3-540-72524-4_59
 – PDF
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        Yoshiharu Ishikawa and Mikine Hasegawa,
        
        
 "T-Scroll: Visualizing Trend in a Time-series of Documents for Interactive User Exploration,"
 Proceedings of 11th European Conference on Research and Advanced Technology for Digital Libraries (ECDL 2007), LNCS 4675, pp. 235-246, Budapest, Hungary, September 2007.
 – DOI: 10.1007/978-3-540-74851-9_20
 – PDF
 – Presentation (PPT)