cs.IR · 2026-07-23 · No. 62

Information Retrieval, 2026-07-23.

2 new papers in cs.IR. Titles, authors, abstracts. Links to arXiv. Want this in your inbox every morning? Subscribe →

01 — The papers

2 entries
  1. 01

    Zero-Observation User Reactivation with Gap-Driven Dimensional Gating

    Jiandong Ding, Tianying Liu, Fuyuan Liu, Huijie Qin, Tiandeng Wu

    cs.IR · cs.LG

    Sequential recommendation (SR) models capture continuously observed behavior, but a returning user may have no interactions for months or years. We define this setting as Zero-Observation Reactivation: the user has a pre-gap history, while the platform observes no behavioral signals during a macro-gap Delta t. Under a chronologically aligned Gap-Synthesize Protocol on three Amazon datasets (Video Games, CDs & Vinyl, and Movies & TV), Hit@10...

    arxiv.org/abs/2607.19802 · PDF

  2. 02

    Personalized Recommendation Tool Learning via Autonomous Language Agents

    Mingdai Yang, Zhiwei Liu, Weizhi Zhang, Yibo Wang, Hao Peng, Philip Yu

    cs.IR · cs.AI

    Although large language models (LLMs) have recently gained traction in recommender systems due to their strong reasoning capabilities and extensive world knowledge, previous LLM-based agents suffer from hallucination and context-length limitations, and thus are not suitable for full-ranking recommendation tasks. To circumvent these limitations through architectural design rather than modifying the LLM itself, we propose an agent-based...

    arxiv.org/abs/2607.19739 · PDF

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