Keito Kozaki

Keito Kozaki

神崎 恵土

Media Dynamics Laboratory, Hokkaido University

I am a first-year master’s student at the Media Dynamics Laboratory, Graduate School of Information Science and Technology, Hokkaido University. My research is on recommender systems, and I am particularly interested in interpreting what happens inside the models and what the benchmark datasets actually measure. More recently I have also become interested in digital twins that imitate people.

Newsscroll ↓

2026.08
“Diagnosing Lexical Text-Anchor Retrievability in Sequential Recommendation Benchmarks” was accepted at CIKM 2026.
2026.07
“Residual Dominance as a Structural Account of Last-Item Reliance in Causal Self-Attention Recommenders” was accepted at RecSys 2026.

Publications

  1. CIKM 2026CORE A Diagnosing Lexical Text-Anchor Retrievability in Sequential Recommendation BenchmarksKeito Kozaki, Keigo Sakurai, Ren Togo, Takahiro Ogawa, Miki Haseyama ACM International Conference on Information and Knowledge Management (CIKM), 2026 details
  2. RecSys 2026CORE A Residual Dominance as a Structural Account of Last-Item Reliance in Causal Self-Attention RecommendersKeito Kozaki, Keigo Sakurai, Ren Togo, Takahiro Ogawa, Miki Haseyama ACM Conference on Recommender Systems (RecSys), 2026 detailspdf
  3. SIGIR 2026CORE A* Revisiting the Role of Learned Attention Weighting in SASRecKeito Kozaki, Keigo Sakurai, Ren Togo, Takahiro Ogawa, Miki Haseyama International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR), pp. 3894-3899, 2026 detailspdf
  4. SSM-Based Sequential Recommendation Considering Short-Term Dependencies of Time and AdjacencyExcellent Paper Award, Silver PrizeKeito Kozaki, Keigo Sakurai, Ren Togo, Takahiro Ogawa, Miki Haseyama IEEE Global Conference on Consumer Electronics (GCCE), pp. 1271-1274, 2025 details

Full list of publications, including domestic conferences →

Media Coverage

Awards

  • 2026.03
    Dean's Award, School of Engineering, Hokkaido University
  • 2026.03
    Student Presentation Award, DEIM2026
  • 2025.11
    Young Researcher Excellent Paper Presentation Award, Joint Conference of Hokkaido Chapters of Electrical and Information Institutes
  • 2025.09
    Excellent Paper Award, Silver Prize, IEEE GCCE 2025

Scholarships and Fellowships

Education

  • 2026.04 - present
    Master's programme in Information Science and Technology
    Graduate School of Information Science and Technology, Hokkaido University
    Media Dynamics Laboratory
  • 2022.04 - 2026.03
    B.Eng.
    School of Engineering, Hokkaido University

Experience