activity
20222025
most citedScalable and Provably Fair Exposure Control for Large-Scale Recommender Systems

4 citations · 8 across the 7 of their papers we have counts for

collaborators

7 papers

cs.CL2025

Evaluation of Best-of-N Sampling Strategies for Language Model Alignment

Yuki Ichihara, Yuu Jinnai, Tetsuro Morimura +4

Best-of-N (BoN) sampling with a reward model has been shown to be an effective strategy for aligning Large Language Models (LLMs) with human preferences at the time of decoding. Bo…

cs.IR20244 cited

Scalable and Provably Fair Exposure Control for Large-Scale Recommender Systems

Riku Togashi, Kenshi Abe, Yuta Saito

Typical recommendation and ranking methods aim to optimize the satisfaction of users, but they are often oblivious to their impact on the items (e.g., products, jobs, news, video)…

cs.LG2023

Learning Fair Division from Bandit Feedback

Hakuei Yamada, Junpei Komiyama, Kenshi Abe +1

This work addresses learning online fair division under uncertainty, where a central planner sequentially allocates items without precise knowledge of agents' values or utilities.…

cs.CL2023

Why Guided Dialog Policy Learning performs well? Understanding the role of adversarial learning and its alternative

Sho Shimoyama, Tetsuro Morimura, Kenshi Abe +6

Dialog policies, which determine a system's action based on the current state at each dialog turn, are crucial to the success of the dialog. In recent years, reinforcement learning…

cs.IR2023

Exploration of Unranked Items in Safe Online Learning to Re-Rank

Hiroaki Shiino, Kaito Ariu, Kenshi Abe +1

Bandit algorithms for online learning to rank (OLTR) problems often aim to maximize long-term revenue by utilizing user feedback. From a practical point of view, however, such algo…

cs.GT20231 cited

Learning in Multi-Memory Games Triggers Complex Dynamics Diverging from Nash Equilibrium

Yuma Fujimoto, Kaito Ariu, Kenshi Abe

Repeated games consider a situation where multiple agents are motivated by their independent rewards throughout learning. In general, the dynamics of their learning become complex.…