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20242026
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cs.IR2026

ReCoVR: Closing the Loop in Interactive Composed Video Retrieval

Bingqing Zhang, Yi Zhang, Zhuo Cao +4

Composed video retrieval (CoVR) searches for target videos using a reference video and a modification text, but existing methods are restricted to a single interaction round and ca…

cs.IR2026

Robust Test-time Video-Text Retrieval: Benchmarking and Adapting for Query Shifts

Bingqing Zhang, Zhuo Cao, Heming Du +4

Modern video-text retrieval (VTR) models excel on in-distribution benchmarks but are highly vulnerable to real-world query shifts, where the distribution of query data deviates fro…

cs.IR2025

Beyond Static LLM Policies: Imitation-Enhanced Reinforcement Learning for Recommendation

Yi Zhang, Lili Xie, Ruihong Qiu +2

Recommender systems (RecSys) have become critical tools for enhancing user engagement by delivering personalized content across diverse digital platforms. Recent advancements in la…

cs.IR2025

MARCO: A Cooperative Knowledge Transfer Framework for Personalized Cross-domain Recommendations

Lili Xie, Yi Zhang, Ruihong Qiu +2

Recommender systems frequently encounter data sparsity issues, particularly when addressing cold-start scenarios involving new users or items. Multi-source cross-domain recommendat…

cs.IR2025

DARLR: Dual-Agent Offline Reinforcement Learning for Recommender Systems with Dynamic Reward

Yi Zhang, Ruihong Qiu, Xuwei Xu +2

Model-based offline reinforcement learning (RL) has emerged as a promising approach for recommender systems, enabling effective policy learning by interacting with frozen world mod…

cs.IR2025

ROLeR: Effective Reward Shaping in Offline Reinforcement Learning for Recommender Systems

Yi Zhang, Ruihong Qiu, Jiajun Liu +1

Offline reinforcement learning (RL) is an effective tool for real-world recommender systems with its capacity to model the dynamic interest of users and its interactive nature. Mos…