About

Updated on 2025/03/12

I've been running some funded research projects on reinforcement learning (with a kind of bounded rationality) and analogy (category-theoretic). For details, see the JSPS database: https://nrid.nii.ac.jp/en/nrid/1000000514514/ (some summaries removed from this page)

Introduction

I am a professor at Tokyo Denki University and run the Internal Measurement lab, and a researcher at RIKEN AIP. I am also an associate member of PARIS (Probabilitè, Anticipation, Raisonnement, Infèrence et Subtrat), at CHArt (Cognitions humaine et artificielle) at University Paris 8, Paris X, and EPHE, where I stayed for a year from April 2016. My interests span from indefiniteness of cognition to cognitive psychology of reasoning to machine learning to complex systems. My recent research topics include reinforcement learning (experimentally, computationally, and theoretically), psychology of causal induction and (bi)conditionals, and robotics. Here is my very old CV (as of Jul 30, 2016); I am on ResearchGate, Google Scholar, slideshare, and dblp. You can contact me at tatsujit@mail.dendai.ac.jp and @ttsjtkhs (Twitter).

Experience

I supervised 5 PhD students and currently I have 6 PhD students (which will be 7 from September 2025). I have supervised 609 master’s and 140 graduate theses as of 2025/03/12. 

completed PhD supervision:

• Kohki Higuchi (March 2023; currently a postdoc at Chubu Uni.)
  
  Causal intuition in the indefinite world: Meta-analysis and simulations

• Takumi Kamiya (March 2022)
  
  Satisficing softmax strategy

• Akihiro Tamatsukuri (April 2017–March 2020; National Institute of Technology and Evaluation, Chemical Management Center, Risk Analysis Division)
  
  Guaranteed Satisficing and Finite Regret

• Yu Kohno (March 2016; Machine learning researcher at DeNA):
  
  Cognitive satisficing algorithm for reinforcement learning
  He was awarded JSPS Research Fellowships for Young Scientists (DC2) (April 2014–March 2016)

• Kuratomo Oyo (March 2015; currentlyl a associate professor at Kwansei Gakuin University):
  
  Causal cognition and K-armed bandit problems and game tree search

Journal reviewing:

• (International) Journal of Bioscience and Bioengineering, BioSystems, Cognition, Complexity, Advances in Complex Systems, Neurocomputing, Entropy, Frontiers in Psychology, Information, Japanese Psychological Review, Scientific Reports, etc.

• (In Japan) IPSJ Transactions on Mathematical Modeling and Its Applications, IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, etc.

Conference reviewing: 

• CogSci, BICT, ICNAAM, IES, Japanese Cognitive Science Society Annual Conference, Symmetry, etc.

Grant reviewing:

• Netherlands Organisation for Scientific Research (NWO) [Vidi grant, up to 1 million euros]

• Austrian Science Fund (FWF) [larger than 100K euros]

• Some Japanese grants (to be disclosed in a few years)