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20242026
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cs.IR2026

KuaFu: Compressing Long User Behavior into Understanding at Billion Scale

Jiahao Hui, Lin Zhu, Yishen Hu +8

Learning user preferences from long behavioral sequences is fundamental to large-scale advertising, recommender systems, and conversational agents. In industrial systems, preferenc…

cs.IR2026

ChronicleRec: Pre-training Temporally Anchored Tokens for Lifelong User Modeling

Chengkai Huang, Yubin Sheng, Liang Guo +9

Modeling ultra-long user behavior sequences is crucial for industrial recommendation and online advertising, yet directly feeding thousands of historical actions into ranking model…

cs.IR2026

Beyond Action Imitation: Learning a Decision-Aware User Simulator for Online Advertising

Zipeng Chen, Jiaer Zheng, Xiangyang Xu +15

Recent advances in LLM-based user simulation have shown promise for offline evaluation of recommendation and advertising systems. However, existing simulators typically infer user…

cs.IR2026

NOVA: A Verification-Aware Agent Harness for Architecture Evolution in Industrial Recommender Systems

Shaohua Liu, Liang Fang, Yilong Sun +16

Industrial advertising recommender systems are continually improved through architecture modifications, yet production iteration remains expert-intensive because coordinated change…

cs.IR2026

Diffusion Language Model for Recommendation

Chengyi Liu, Yongqi Zhou, Junwei Pan +8

Large language model (LLM)-empowered recommender systems have emerged as a promising paradigm for generative recommendation, leveraging their strong semantic reasoning and generati…

cs.IR2026

SIREN: Unified Multi-Granularity Semantic Interaction for Multi-Modal Lifelong User Interest Modeling

Yaqian Zhang, Ruyi Yu, Tianyi Li +13

Industrial recommender systems increasingly leverage lifelong user behavior histories and rich multi-modal content to capture evolving user preferences. However, effectively integr…

cs.IR2026

RankUp: Towards High-rank Representations for Large Scale Advertising Recommender Systems

Jin Chen, Shangyu Zhang, Bin Hu +16

The scaling laws for recommender systems have been increasingly validated, where MetaFormer-based architectures consistently benefit from increased model depth, hidden dimensionali…

cs.IR2026

Asymmetric Generative Recommendation via Kronecker Residual Bridge and Multi-Faceted Hierarchical Quantization

Bin Huang, Xin Wang, Junwei Pan +6

Generative Recommendation (GenRec) models reformulate recommendation as a sequence generation task, representing items as discrete Semantic IDs used symmetrically as both inputs an…

cs.IR2026

TokenFormer: Unify the Multi-Field and Sequential Recommendation Worlds

Yifeng Zhou, Yuehong Hu, Zhixiang Feng +9

Recommender systems have historically developed along two largely independent paradigms: feature interaction models for modeling correlations among multi-field categorical features…

cs.IR2026

Tencent Advertising Algorithm Challenge 2025: All-Modality Generative Recommendation

Junwei Pan, Wei Xue, Chao Zhou +20

Generative recommender systems are rapidly emerging as a new paradigm for recommendation, where collaborative identifiers and/or multi-modal content are mapped into discrete token…

cs.IR2025

Practice on Long Behavior Sequence Modeling in Tencent Advertising

Xian Hu, Ming Yue, Zhixiang Feng +24

Long-sequence modeling has become an indispensable frontier in recommendation systems for capturing users' long-term preferences. However, user behaviors within advertising domains…

cs.IR2024

LEADRE: Multi-Faceted Knowledge Enhanced LLM Empowered Display Advertisement Recommender System

Fengxin Li, Yi Li, Yue Liu +11

Display advertising provides significant value to advertisers, publishers, and users. Traditional display advertising systems utilize a multi-stage architecture consisting of retri…