Masatoshi Yoshikawa Department of Social Informatics Graduate School of Informatics Kyoto University Yoshida-Honmachi, Sakyo-ku, Kyoto 606-8501 JAPAN e-mail: yoshikawa (AT) i (dot) kyoto-u (dot) ac (dot) jp

• Privacy Protection and Data Valuation
• Personal Data Utilization and Privacy Protection
• Data Valuation
• Mutually Beneficial Confluent Routing
• Infrastructure for Promoting Secondary Usage of Medical Information
• Metadata Systems for Information on Earth Environment

• Rachana Nget, Yang Cao, Masatoshi Yoshikawa "How to Balance Privacy and Money through Pricing Mechanism in Personal Data Market" The 2017 SIGIR Workshop on eCommerce, August 2017.
• Juyeong Park, Hiroyuki Kato, Masatoshi Yoshikawa, "Cell-based Provenance for Scientific Data," The ACM/IEEE-CS Joint Conference on Digital Libraries (JCDL2017), poster, June 2017.
• Xinpeng Zhang, Yasuhito Asano, Masatoshi Yoshikawa, "Mutually Beneficial Confluent Routing," The 33rd IEEE International Conference on Data Engineering (ICDE2017), TKDE Poster Session, April, 2017.
• Yang Cao, Masatoshi Yoshikawa, Yonghui Xiao and Li Xiong, "Quantifying Differential Privacy under Temporal Correlations," The 33rd IEEE International Conference on Data Engineering (ICDE2017), April, 2017.
• Hideaki Ohashi, Toshiyuki Shimizu, and Masatoshi Yoshikawa, "Flexible Similarity Search for Enriched Trajectories," 11th International Workshop on Spatial and Spatiotemporal Data Mining (SSTDM-16) In Cooperation with IEEE International Conference on Data Mining (ICDM 2016), Barcelona, Spain, December 12-15 2016. (pre-print)
• Yu Nakano, Toshiyuki Shimizu, and Masatoshi Yoshikawa, "A Visualization of Relationships Among Papers Using Citation and Co-citation Information," 18th International Conference on Asia-Pacific Digital Libraries (ICADL2016) December 7-9, 2016. (pre-print)
• Kazuki Takise, Yasuhito Asano, Masatoshi Yoshikawa, "Multi-user Routing to Single Destination with Confluence" 24th ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (ACM SIGSPATIAL 2016), Oct.-Nov. 2016 (pre-print)
• Xinpeng Zhang, Yasuhito Asano, Masatoshi Yoshikawa, "Mutually Beneficial Confluent Routing," IEEE Transactions on Knowledge and Data Engineering (TKDE), Vol. 28, No. 10, pp. 2681-2696, Oct. 2016. doi:10.1109/TKDE.2016.2590435

Masatoshi Yoshikawa received B.E., M.E. and Ph.D. degrees from Department of Information Science, Kyoto University in 1980, 1982 and 1985, respectively. He was on the faculty of Kyoto Sangyo University from 1985 until 1993. From 1989 to 1990, he was a visiting scientist at Computer Science Department, University of Southern California. In 1993, he joined Nara Institute of Science and Technology (NAIST) as a faculty member. From April 1996 to January 1997, he has stayed at Department of Computer Science, University of Waterloo as a visiting associate professor. From June 2002 to March 2006, he served as a professor at Nagoya University. From April 2006, he has been a professor at Kyoto University.

His general research interests are in the area of databases.