Rikiya Takehi

12 papers A* 2A 2Journal 7Unranked 1
YearRankTypeTitle / Venue / Authors
2026 J jnl
Beyond Match Maximization and Fairness: Retention-Optimized Two-Sided Matching.
CoRR
Ren Kishimoto, Rikiya Takehi, Koichi Tanaka, Masahiro Nomura, Riku Togashi, Yoji Tomita, Yuta Saito
2026 A conf
Diversification as Risk Minimization.
WSDM
Rikiya Takehi, Fernando Diaz, Tetsuya Sakai
2025 A* conf
A General Framework for Off-Policy Learning with Partially-Observed Reward.
ICLR
Rikiya Takehi, Masahiro Asami, Kosuke Kawakami, Yuta Saito
2025 J jnl
A General Framework for Off-Policy Learning with Partially-Observed Reward.
CoRR
Rikiya Takehi, Masahiro Asami, Kosuke Kawakami, Yuta Saito
2025 J jnl
Diversification as Risk Minimization.
CoRR
Rikiya Takehi, Fernando Diaz, Tetsuya Sakai
2025 J jnl
Fantastic (small) Retrievers and How to Train Them: mxbai-edge-colbert-v0 Tech Report.
CoRR
Rikiya Takehi, Benjamin Clavié, Sean Lee, Aamir Shakir
2025 A* conf
LLM-Assisted Relevance Assessments: When Should We Ask LLMs for Help?
SIGIR
Rikiya Takehi, Ellen M. Voorhees, Tetsuya Sakai, Ian Soboroff
2025 A conf
Open-Source LLM-based Relevance Assessment vs. Highly Reliable Manual Relevance Assessment: A Case Study.
CIKM
Tetsuya Sakai, Khant Myoe Rain, Rikiya Takehi, Sijie Tao, Young-In Song
2025 J jnl
Simple Projection Variants Improve ColBERT Performance.
CoRR
Benjamin Clavié, Sean Lee, Rikiya Takehi, Aamir Shakir, Makoto P. Kato
2024 J jnl
LLM-Assisted Relevance Assessments: When Should We Ask LLMs for Help?
CoRR
Rikiya Takehi, Ellen M. Voorhees, Tetsuya Sakai
2023 — conf
Open-Domain Dialogue Quality Evaluation: Deriving Nugget-level Scores from Turn-level Scores.
SIGIR-AP
Rikiya Takehi, Akihisa Watanabe, Tetsuya Sakai
2023 J jnl
Open-Domain Dialogue Quality Evaluation: Deriving Nugget-level Scores from Turn-level Scores.
CoRR
Rikiya Takehi, Akihisa Watanabe, Tetsuya Sakai