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Masafumi Oyamada's Page

Masafumi Oyamada

Data Mining Technology Group
Data Science Research Laboratories
NEC Corporation
Senior Researcher

Address:
1753, Shimonumabe, Nakahara-ku, Kawasaki-shi, Kanagawa, 211-8666, Japan

Research Interests

My research focuses on developing a new database technology that helps users to explore abundant data by incorporating state-of-the-art machine learning technologies with classical and solid database technologies. Specifically, I'm now interested in the following topics:

  • Machine learning
    - Latent variable model
    - Bayesian nonparametrics
    - Variational inference
  • Database systems technology
    - Query optimization
    - Indexing
    - Automated database design
  • Data stream processing
    - Transactional data stream processing

Publication List

Journal papers

Conference papers

  • Masafumi Oyamada and Shinji Nakadai, Relational Mixture of Experts: Explainable Demographics Prediction with Behavioral Data, IEEE International Conference on Data Mining (ICDM), 2017 (Regular paper, Acceptance rate: 72/778 = 9.25%)
  • Katsufumi Tomobe, Masafumi Oyamada, and Shinji Nakadai, Link Prediction for Isolated Nodes in Heterogeneous Network by Topic-based Co-Clustering, In Proceedings of the 21st Pacific Asia Conference on Knowledge Discovery and Data Mining (PAKDD), to appear, 2017.
  • Masafumi Oyamada, Jianquan Liu, Kazuyo Narita, and Takuya Araki. MOARLE: Matrix Operation Accelerator based on Run-Length Encoding, In Proceedings of the 16th Asia-Pacific Web Conference (APWeb), pages 425-436, 2014 (Best paper runner up).
  • Masafumi Oyamada, Hideyuki Kawashima, and Hiroyuki Kitagawa. Continuous Query Processing with Concurrency Control: Reading Updatable Resources Consistently, In Proceedings of the 28th ACM Symposium on Applied Computing (SAC), pages 788-794, 2013.
  • Masafumi Oyamada, Hideyuki Kawashima, and Hiroyuki Kitagawa. Efficient Invocation of Transaction Sequences Triggered by Data Streams, In Proceedings of the 2nd International Workshop on Streaming Media Delivery and Management Systems (SMDMS), pages 332-337, 2011.
  • Masafumi Oyamada, Hideyuki Kawashima, and Hiroyuki Kitagawa. Integration of Data Streams and Relations with Main Memory Database, In Proceedings of the 8th International Conference on Networked Sensing Systems (INSS), 2011 (poster).

Awards

  • Best honorable poster in DEIM 2015
  • Best paper runner up award in APWeb 2015
  • Honorable poster in DEIM 2014
  • Chair of department of computer science award from University of Tsukuba
  • Honorable student talk in DEIM 2013

Professional Services

Review

  • IEICE Trans. 2014, 2016
  • ADMS 2014 (External)

Committee

  • DEIM 2017 Commentator
  • JSAI 2017 Program Committee
  • DEIM 2016 Local Committee

Biography

  • 2011.3   B.S. in Computer Science from University of Tsukuba, Japan
  • 2013.3   M.S. in Computer Science from University of Tsukuba, Japan
  • 2013.4 - today   Research Staff Member at NEC Corporation

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