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With the rapid evolution of Large Language Models (LLMs), generative recommendation is gradually reshaping the paradigm of recommender systems. However, most existing methods remain confined to the interaction-driven next-item prediction…

Information Retrieval · Computer Science 2026-04-21 Yang Yu , Lei Kou , Huaikuan Yi , Bin Chen , Yayu Cao , Lei Shen , Chao Zhang , Bing Wang , Xiaoyi Zeng

Semantic ID learning is a key interface in Generative Recommendation (GR) models, mapping items to discrete identifiers grounded in side information, most commonly via a pretrained text encoder. However, these text encoders are primarily…

Information Retrieval · Computer Science 2026-01-22 Shutong Qiao , Wei Yuan , Tong Chen , Xiangyu Zhao , Quoc Viet Hung Nguyen , Hongzhi Yin

Generative retrieval-based recommendation has emerged as a promising paradigm aiming at directly generating the identifiers of the target candidates. However, in large-scale recommendation systems, this approach becomes increasingly…

Information Retrieval · Computer Science 2025-06-23 Penglong Zhai , Yifang Yuan , Fanyi Di , Jie Li , Yue Liu , Chen Li , Jie Huang , Sicong Wang , Yao Xu , Xin Li

Recommender systems are indispensable for helping users navigate the immense item catalogs of modern online platforms. Recently, generative recommendation has emerged as a promising paradigm, unifying the conventional retrieve-and-rank…

Information Retrieval · Computer Science 2025-09-12 Dengzhao Fang , Jingtong Gao , Chengcheng Zhu , Yu Li , Xiangyu Zhao , Yi Chang

With recent advances in large language models (LLMs), there has been emerging numbers of research in developing Semantic IDs based on LLMs to enhance the performance of recommendation systems. However, the dimension of these embeddings…

Information Retrieval · Computer Science 2024-10-15 Taolin Zhang , Junwei Pan , Jinpeng Wang , Yaohua Zha , Tao Dai , Bin Chen , Ruisheng Luo , Xiaoxiang Deng , Yuan Wang , Ming Yue , Jie Jiang , Shu-Tao Xia

Strong semantic representations improve the convergence and generation quality of diffusion and flow models. Existing approaches largely rely on external models, which require separate training, operate on misaligned objectives, and exhibit…

Computer Vision and Pattern Recognition · Computer Science 2026-03-09 Hila Chefer , Patrick Esser , Dominik Lorenz , Dustin Podell , Vikash Raja , Vinh Tong , Antonio Torralba , Robin Rombach

In large-scale distributed scenarios, increasingly complex tasks demand more intelligent collaboration across networks, requiring the joint extraction of structural representations from data samples. However, conventional task-specific…

Machine Learning · Computer Science 2026-04-21 Zhuojun Tian , Chaouki Ben Issaid , Mehdi Bennis

Collaborative filtering is the de facto standard for analyzing users' activities and building recommendation systems for items. In this work we develop Sliced Anti-symmetric Decomposition (SAD), a new model for collaborative filtering based…

Information Retrieval · Computer Science 2023-07-11 Shiwen Zhao , Charles Crissman , Guillermo R Sapiro

The Platonic Representation Hypothesis posits that neural networks trained on different modalities converge toward a shared statistical model of the world. Recent work exploits this convergence by aligning frozen pretrained vision and…

Machine Learning · Computer Science 2026-02-27 Simon Roschmann , Paul Krzakala , Sonia Mazelet , Quentin Bouniot , Zeynep Akata

Semantic ID-based recommendation models tokenize each item into a small number of discrete tokens that preserve specific semantics, leading to better performance, scalability, and memory efficiency. While recent models adopt a generative…

Information Retrieval · Computer Science 2025-06-09 Yupeng Hou , Jiacheng Li , Ashley Shin , Jinsung Jeon , Abhishek Santhanam , Wei Shao , Kaveh Hassani , Ning Yao , Julian McAuley

To offer accurate and diverse recommendation services, recent methods use auxiliary information to foster the learning process of user and item representations. Many SOTA methods fuse different sources of information (user, item, knowledge…

Information Retrieval · Computer Science 2022-11-14 Haolun Wu , Yingxue Zhang , Chen Ma , Wei Guo , Ruiming Tang , Xue Liu , Mark Coates

Semi-supervised learning addresses label scarcity and high annotation costs in medical image segmentation by exploiting the latent information in unlabeled data to enhance model performance. Traditional discriminative segmentation relies on…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Kaiwen Huang , Yi Zhou , Yizhe Zhang , Jingxiong Li , Tao Zhou

Generative recommendation frameworks typically represent items as discrete Semantic IDs (SIDs). While existing studies have sought to enhance SID construction by incorporating multimodal content, collaborative signals, or more advanced…

Information Retrieval · Computer Science 2026-04-30 Yibiao Wei , Jie Zou , Pengfei Zhang , Xiao Ao , Weikang Guo , Zeyu Ma , Yang Yang

Modern recommendation systems involve massive catalogs of multimodal items, where scalable item identification must balance compactness, semantic fidelity, and downstream effectiveness. Semantic IDs (SIDs) address this need by representing…

Information Retrieval · Computer Science 2026-04-28 Yongsen Pan , Yuxin Chen , Zheng Hu , Xu Yuan , Daoyuan Wang , Yuting Yin , Songhao Ni , Hongyang Wang , Jun Wang , Fuji Ren , Wenwu Ou

Recent advances in generic large models, such as GPT and DeepSeek, have motivated the introduction of universality to graph pre-training, aiming to learn rich and generalizable knowledge across diverse domains using graph representations to…

Machine Learning · Computer Science 2026-02-27 Lianze Shan , Jitao Zhao , Dongxiao He , Siqi Liu , Jiaxu Cui , Weixiong Zhang

Recent studies increasingly explore Large Language Models (LLMs) as a new paradigm for recommendation systems due to their scalability and world knowledge. However, existing work has three key limitations: (1) most efforts focus on…

Issues of safety, explainability, and efficiency are of increasing concern in learning systems deployed with hard and soft constraints. Symbolic Constrained Learning and Knowledge Distillation techniques have shown promising results in this…

Artificial Intelligence · Computer Science 2024-05-28 Miguel Angel Mendez-Lucero , Enrique Bojorquez Gallardo , Vaishak Belle

Most work on supervised learning research has focused on marginal predictions. In decision problems, joint predictive distributions are essential for good performance. Previous work has developed methods for assessing low-order predictive…

Machine Learning · Statistics 2022-03-01 Ian Osband , Zheng Wen , Seyed Mohammad Asghari , Vikranth Dwaracherla , Xiuyuan Lu , Benjamin Van Roy

Embedding-based retrieval serves as a dominant approach to candidate item matching for industrial recommender systems. With the success of generative AI, generative retrieval has recently emerged as a new retrieval paradigm for…

Information Retrieval · Computer Science 2024-09-10 Jieming Zhu , Mengqun Jin , Qijiong Liu , Zexuan Qiu , Zhenhua Dong , Xiu Li

Large language models (LLMs) have become an important semantic infrastructure for modern recommender systems. A prevailing paradigm integrates LLM-derived semantic embeddings with collaborative representations via representation alignment,…

Information Retrieval · Computer Science 2026-04-27 Maolin Wang , Dongze Wu , Jianing Zhou , Hongyu Chen , Beining Bao , Yu Jiang , Chenbin Zhang , Chang Wang , Jian Liu , Lei Sha