Sugiyama Lab, NII

Computation, Structure, and Learning

Our group, led by Assoc. Prof. Mahito Sugiyama, studies machine learning at National Institute of Informatics (NII) in Tokyo since 2017.

Machine learning is the discipline of studying intelligent computing systems, which nowadays plays a key role in artificial intelligence (AI). To reveal the nature of learning, we focus on the relationship between computational processes, discrete structures, and machine learning models.

We belong to the Department of Informatics, SOKENDAI (The Graduate University for Advanced Studies), which offers 3-year and 5-year Ph.D. courses. More information is available at the NII website.

News

  • Our paper "Optimal Submanifold Structure in Log-linear Models" (First author: Derun Zhou) has been accepted to UAI 2025 (May 7, 2025).
  • Daigo Okada (Assistant Professor at Gifu University) joined our lab as a cross-appointed researcher (May 1, 2025).
  • Profir-Petru Pârțachi was appointed Assistant Professor at the Institute of Science Tokyo. Congratulations! (May 1, 2025)
  • Toshiya Iwamori, Teppei Eda, and Hangtian Wang joined our lab as new Ph.D. students (Apr. 1, 2025).
  • Ryuichi Kanoh has been awarded a Ph.D. in Informatics from SOKENDAI and has received the prestigious SOKENDAI Award (equivalent to the university's President's Award). Congratulations! (Mar. 24, 2025)
  • Assoc. Prof. Sugiyama will give a talk about "A Unified Information Geometric Perspective on Machine Learning in Structured Spaces" at FDIG 2025 (Mar. 18, 2025).  [Slide]
  • Two papers have been accepted to ICLR 2025 DeLTa workshop (Mar. 6, 2025).
  • Jacek Karwowski from University of Oxford joined our lab as an internship student (Mar. 3, 2025).
  • Our paper "Ultimate Intelligence and Ethics" (First author: Ryunosuke Ishizaki) has been accepted to Analysis and Metaphysics journal (Feb. 21, 2025).  [PhilArchive]
  • Our paper "Large Language Models: Assessment for Singularity" (First author: Ryunosuke Ishizaki) has been accepted to AI & Society journal (Feb. 20, 2025).  [PhilArchive]
  • Wut Yee Aung from the Asian Institute of Technology joined our lab as an internship student (Feb. 18, 2025).
  • Our paper "Linear Mode Connectivity in Differentiable Tree Ensembles" (First author: Ryuichi Kanoh) has been accepted to ICLR 2025 as a spotlight presentation! (Jan. 23, 2025).  [arXiv]  [openreview]  [Poster]

▶ more news...

Contact

National Institute of Informatics,
2-1-2 Hitotsubashi, Chiyoda-ku, Tokyo 101-8430, Japan
https://www.nii.ac.jp/en/about/access/
Email: mahito (at) nii.ac.jp

© Mahito Sugiyama 2025