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NEC R&D Members

Tsubasa Takahashi

Tsubasa Takahashi

Security Research Laboratory,
NEC Central Research Labs.
Assistant Manager
Ph.D. in Computer Science

Research Area

  • Data Mining, Data Engineering, Applied Machine Learning
  • Privacy Preserving Data Mining, Data Anonymization
  • Applied Machine Learning for Cyber Security


  • Ryosuke Koyanagi, Ryo Furukawa, Tsubasa Takahashi, Toshiyuki Amagasa, Hiroyuki Kitagawa. A Scheme for Fast k-concealment Anonymization. IEICE Transactions on Information and Systems, Vol. 99 No. 4, pp. 1000-1009, 2016.
  • Tsubasa Takahashi, Hiroyuki Kitagawa, Keita Watanabe. Social Bookmarking Induced Active Page Ranking. IEICE Transactions on Information and Systems, Vol. 93, No. 6, pp. 1403-1413, 2010.

International Conference/Workshop Papers

  • Tsubasa Takahashi, Bryan Hooi, Christos Faloutsos. AutoCyclone: Automatic Mining of Cyclic Online Activities with Robust Tensor Factorization. International Conference on World Wide Web  (WWW), pp. 213-221, 2017.
  • Miho Kakizawa, Chiemi Watanabe, Ryo Furukawa, Tsubasa Takahashi. Improvement of Pk-Anonymization. SRDS Workshops 2014, pp. 82-87, 2014.
  • Tsubasa Takahashi, Koji Sobataka, Takao Takenouchi, Yuki Toyoda, Takuya Mori, Takahide Kohro. Top-down Itemset Recoding for Releasing Private Complex Data. International Conference on Privacy, Security and Trust (PST), pp. 373-376, 2013.
  • Tsubasa Takahashi, Shinya Miyakawa. CMOA: Continuous Moving Object Anonymization. International Database Engineering & Applications Symposium (IDEAS), pp. 81-90, 2012.
  • Yuto Yamaguchi, Tsubasa Takahashi, Toshiyuki Amagasa, Hiroyuki Kitagawa. TURank: Twitter User Ranking Based on User-Tweet Graph Analysis. International Conference on Web Information Systems Engineering (WISE), pp. 240-253, 2010.
  • Tsubasa Takahashi, Hiroyuki Kitagawa. A Ranking Method for Web Search Using Social Bookmarks. International Conference on Data Systems for Advanced Applications (DASFAA), pp. 585-589, 2009.
  • Tsubasa Takahashi, Hiroyuki Kitagawa. S-BITS: Social-Bookmarking Induce Topic Search. International Conference on Web-Age Information Management, pp. 25-30, 2008.


  • Mar. 2008B.E. in Information Engineering, University of Tsukuba
  • Mar. 2010M.E. in Computer Science, University of Tsukuba
  • Apr. 2010Join NEC Central Laboratories
  • Mar. 2014Ph.D. in Computer Science, University of Tsukuba
  • Mar. 2015 - Mar. 2016Visiting Research Scholar, Carnegie Mellon University

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