Masashi Sugiyama

1. Academic Summary



Masashi Sugiyama is a leading Japanese researcher in machine learning and statistical data analysis, known for both theoretical foundations and practical machine learning methods. He currently directs RIKEN AIP while holding a professorship at The University of Tokyo where he develops modern AI methods.



2. Education


  • Bachelor of Engineering (B.Eng.) — Tokyo Institute of Technology, Japan (1997).

  • Master of Engineering (M.Eng.) — Tokyo Institute of Technology, Japan (1999).

  • Doctor of Engineering (Dr.Eng.) — Tokyo Institute of Technology, Japan (2001).




3. Professional Experience


  • Director, RIKEN Center for Advanced Intelligence Project (AIP) (since 2016).

  • Professor, Department of Complexity Science and Engineering, Graduate School of Frontier Sciences, The University of Tokyo (since 2014).

  • Previously Assistant & Associate Professor, Tokyo Institute of Technology.




4. Research Interests



Masashi Sugiyama’s research includes:

  • Statistical Machine Learning

  • Weakly Supervised Learning & Reinforcement Learning

  • Theory and Algorithms of Data Analysis

  • Density Ratio Estimation & Statistical Inference

  • Machine Learning in Non-Stationary Environments

    He has authored influential textbooks on these topics.




5. Selected Publications & Books



He co-authored key machine learning monographs:

  • Machine Learning in Non-Stationary Environments (MIT Press).

  • Density Ratio Estimation in Machine Learning (Cambridge University Press).

  • Statistical Reinforcement Learning (CRC Press).

  • Introduction to Statistical Machine Learning (Morgan Kaufmann).

  • Machine Learning from Weak Supervision (MIT Press).




6. Honors & Awards


  • Japan Academy Medal (2017) — one of the top honors in Japanese science.

  • Commendation for Science and Technology, Minister of Education, Culture, Sports, Science and Technology (2022).