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20242026
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cs.IR2026

A Survey on Generative Recommendation: Data, Model, and Tasks

Min Hou, Le Wu, Yuxin Liao +6

Recommender systems serve as foundational infrastructure in modern information ecosystems, helping users navigate digital content and discover items aligned with their preferences.…

cs.IR2026

Multimodal Large Language Models with Adaptive Preference Optimization for Sequential Recommendation

Yu Wang, Yonghui Yang, Le Wu +3

Recent advances in Large Language Models (LLMs) have opened new avenues for sequential recommendation by enabling natural language reasoning over user behavior sequences. A common…

cs.IR2026

MLLMRec-R1: Incentivizing Reasoning Capability in Large Language Models for Multimodal Sequential Recommendation

Yu Wang, Yonghui Yang, Le Wu +3

Group relative policy optimization (GRPO) has become a standard post-training paradigm for improving reasoning and preference alignment in large language models (LLMs), and has rec…

cs.IR2026

MealRec: Multi-granularity Sequential Modeling via Hierarchical Diffusion Models for Micro-Video Recommendation

Xinxin Dong, Haokai Ma, Yuze Zheng +3

Micro-video recommendation aims to capture user preferences from the collaborative and context information of the interacted micro-videos, thereby predicting the appropriate videos…

cs.IR2026

CLEAR: Null-Space Projection for Cross-Modal De-Redundancy in Multimodal Recommendation

Hao Zhan, Yihui Wang, Yonghui Yang +6

Multimodal recommendation has emerged as an effective paradigm for enhancing collaborative filtering by incorporating heterogeneous content modalities. Existing multimodal recommen…

cs.IR2025

Invariance Matters: Empowering Social Recommendation via Graph Invariant Learning

Yonghui Yang, Le Wu, Yuxin Liao +4

Graph-based social recommendation systems have shown significant promise in enhancing recommendation performance, particularly in addressing the issue of data sparsity in user beha…