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20242026
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cs.IR2026

Probabilistic Residual Learning for Online Recommendations

Wenyuan Wang, Yusong Zhao, Zihao Xu +11

Modern recommender systems are typically based on deep learning (DL) models, where a dense encoder learns representations of users and items. As a result, these systems often suffe…

cs.IR2026

LRanker: LLM Ranker for Massive Candidates

Tao Feng, Zijie Lei, Zhigang Hua +4

Large language models (LLMs) have recently shown strong potential for ranking by capturing semantic relevance and adapting across diverse domains, yet existing methods remain const…

cs.IR2026

UniRec: Unified Multimodal Encoding for LLM-Based Recommendations

Zijie Lei, Tao Feng, Zhigang Hua +5

Large language models have recently shown promise for multimodal recommendation, particularly with text and image inputs. Yet real-world recommendation signals extend far beyond th…

cs.IR2025

CoFiRec: Coarse-to-Fine Tokenization for Generative Recommendation

Tianxin Wei, Xuying Ning, Xuxing Chen +6

In web environments, user preferences are often refined progressively as users move from browsing broad categories to exploring specific items. However, existing generative recomme…

cs.IR2025

R1-Ranker: Teaching LLM Rankers to Reason

Tao Feng, Zhigang Hua, Zijie Lei +4

Large language models (LLMs) have recently shown strong reasoning abilities in domains like mathematics, coding, and scientific problem-solving, yet their potential for ranking tas…

cs.IR2025

Unified Semantic and ID Representation Learning for Deep Recommenders

Guanyu Lin, Zhigang Hua, Tao Feng +3

Effective recommendation is crucial for large-scale online platforms. Traditional recommendation systems primarily rely on ID tokens to uniquely identify items, which can effective…

cs.IR2024

Ads Supply Personalization via Doubly Robust Learning

Wei Shi, Chen Fu, Qi Xu +5

Ads supply personalization aims to balance the revenue and user engagement, two long-term objectives in social media ads, by tailoring the ad quantity and density. In the industry-…