Publications

You can also find my articles on my Google Scholar profile

1. Rikiya Takehi, Kosuke Kawakami, Masahiro Asami, Yuta Saito. 2025.
   General Framework for Off-Policy Learning with Partially-Observed Reward.
   In Proceedings of the International Conference on Learning Representations (ICLR ‘25) (Acceptance rate = 32%).
   arXiv | OpenReview | presentation | poster

2. Rikiya Takehi, Ellen M. Voorhees, Tetsuya Sakai, and Ian Soboroff. 2025.
   LLM‑Assisted Relevance Assessments: When Should We Ask LLMs for Help?.
   In Proceedings of the 43rd International ACM SIGIR Conference on Research and Development in Information Retrieval (SIGIR ‘25) (Acceptance rate = 21%).
   arXiv | slides | code

3. Tetsuya Sakai, Khant Myoe Rain, Rikiya Takehi, Sijie Tao, Youngin Song. 2025.
   Open-Source LLM-based Relevance Assessment vs. Highly Reliable Manual Relevance Assessment: A Case Study.
   In Proceedings of the ACM International Conference on Information and Knowledge Management (CIKM 2025) (Acceptance rate = 30%).

4. Rikiya Takehi, Akihisa Watanabe, and Tetsuya Sakai. 2023.
   Open-Domain Dialogue Quality Evaluation: Deriving Nugget-level Scores from Turn-level Scores
   In Proceedings of the Annual International ACM SIGIR Conference on Research and Development in Information Retrieval in the Asia Pacific Region (SIGIR-AP ‘23). (acceptance rate = 36%)
   code | poster | slides | proceedings