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Modern recommender systems struggle to effectively utilize the rich, yet high-dimensional and noisy, multi-modal features generated by Large Language Models (LLMs). Treating these features as static inputs decouples them from the core…

Information Retrieval · Computer Science 2025-12-02 Jiahao Tian , Zhenkai Wang

Diffusion models that are based on iterative denoising have been recently proposed and leveraged in various generation tasks like image generation. Whereas, as a way inherently built for continuous data, existing diffusion models still have…

Computation and Language · Computer Science 2023-04-11 Jiaao Chen , Aston Zhang , Mu Li , Alex Smola , Diyi Yang

Recently, motivated by the outstanding achievements of diffusion models, the diffusion process has been employed to strengthen representation learning in recommendation systems. Most diffusion-based recommendation models typically utilize…

Information Retrieval · Computer Science 2025-08-19 Yongchun Zhu , Guanyu Jiang , Jingwu Chen , Feng Zhang , Xiao Yang , Zuotao Liu

Accurate prediction of users' responses to items is one of the main aims of many computational advising applications. Examples include recommending movies, news articles, songs, jobs, clothes, books and so forth. Accurate prediction of…

Applications · Statistics 2022-12-20 Baode Gao , Guangpeng Zhan , Hanzhang Wang , Yiming Wang , Shengxin Zhu

Multimodal recommendation combines the user historical behaviors with the modal features of items to capture the tangible user preferences, presenting superior performance compared to the conventional ID-based recommender systems. However,…

Information Retrieval · Computer Science 2026-01-27 Yuzhuo Dang , Xin Zhang , Zhiqiang Pan , Yuxiao Duan , Wanyu Chen , Fei Cai , Honghui Chen

Recommendation fairness has recently attracted much attention. In the real world, recommendation systems are driven by user behavior, and since users with the same sensitive feature (e.g., gender and age) tend to have the same patterns,…

Information Retrieval · Computer Science 2025-07-16 Yang Liu , Feng Wu , Xuefang Zhu

Sequential recommendation has attracted increasing attention due to its ability to accurately capture the dynamic changes in user interests. We have noticed that generative models, especially diffusion models, which have achieved…

Information Retrieval · Computer Science 2024-09-18 Wenjia Xie , Rui Zhou , Hao Wang , Tingjia Shen , Enhong Chen

Multi-behavior sequential recommendation (MBSR) aims to learn the dynamic and heterogeneous interactions of users' multi-behavior sequences, so as to capture user preferences under target behavior for the next interacted item prediction.…

Information Retrieval · Computer Science 2026-02-27 Ruochen Yang , Xiaodong Li , Jiawei Sheng , Jiangxia Cao , Xinkui Lin , Shen Wang , Shuang Yang , Zhaojie Liu , Tingwen Liu

Sequential recommendation aims to infer user preferences from historical interaction sequences and predict the next item that users may be interested in the future. The current mainstream design approach is to represent items as fixed…

Information Retrieval · Computer Science 2023-12-21 Yong Niu , Xing Xing , Zhichun Jia , Ruidi Liu , Mindong Xin

This paper presents a diffusion-based recommender system that incorporates classifier-free guidance. Most current recommender systems provide recommendations using conventional methods such as collaborative or content-based filtering.…

Information Retrieval · Computer Science 2024-09-17 Noah Buchanan , Susan Gauch , Quan Mai

Multimedia recommendation has received much attention in recent years. It models user preferences based on both behavior information and item multimodal information. Though current GCN-based methods achieve notable success, they suffer from…

Information Retrieval · Computer Science 2023-08-08 Penghang Yu , Zhiyi Tan , Guanming Lu , Bing-Kun Bao

Audio-visual saliency prediction can draw support from diverse modality complements, but further performance enhancement is still challenged by customized architectures as well as task-specific loss functions. In recent studies, denoising…

Computer Vision and Pattern Recognition · Computer Science 2024-03-05 Junwen Xiong , Peng Zhang , Tao You , Chuanyue Li , Wei Huang , Yufei Zha

Contrastive learning has been effectively utilized to enhance the training of sequential recommendation models by leveraging informative self-supervised signals. Most existing approaches generate augmented views of the same user sequence…

Information Retrieval · Computer Science 2025-02-06 Ziqiang Cui , Haolun Wu , Bowei He , Ji Cheng , Chen Ma

Session-based recommendation aims to predict the next item that anonymous users may be interested in, based on their current session interactions. Recent studies have demonstrated that retrieving neighbor sessions to augment the current…

Information Retrieval · Computer Science 2026-01-08 Yuhan Yang , Jie Zou , Guojia An , Jiwei Wei , Yang Yang , Heng Tao Shen

Preference optimization for diffusion models aims to align them with human preferences for images. Previous methods typically use Vision-Language Models (VLMs) as pixel-level reward models to approximate human preferences. However, when…

Computer Vision and Pattern Recognition · Computer Science 2025-10-03 Tao Zhang , Cheng Da , Kun Ding , Huan Yang , Kun Jin , Yan Li , Tingting Gao , Di Zhang , Shiming Xiang , Chunhong Pan

Recommender systems have seen significant advancements with the influence of deep learning and graph neural networks, particularly in capturing complex user-item relationships. However, these graph-based recommenders heavily depend on…

Information Retrieval · Computer Science 2024-12-12 Xubin Ren , Wei Wei , Lianghao Xia , Lixin Su , Suqi Cheng , Junfeng Wang , Dawei Yin , Chao Huang

Session-based recommendation aims to predict user the next action based on historical behaviors in an anonymous session. For better recommendations, it is vital to capture user preferences as well as their dynamics. Besides, user…

Information Retrieval · Computer Science 2021-06-18 Dou Hu , Lingwei Wei , Wei Zhou , Xiaoyong Huai , Zhiqi Fang , Songlin Hu

Precise user and item embedding learning is the key to building a successful recommender system. Traditionally, Collaborative Filtering(CF) provides a way to learn user and item embeddings from the user-item interaction history. However,…

Information Retrieval · Computer Science 2019-04-24 Le Wu , Peijie Sun , Yanjie Fu , Richang Hong , Xiting Wang , Meng Wang

Generative models, such as Variational Auto-Encoder (VAE) and Generative Adversarial Network (GAN), have been successfully applied in sequential recommendation. These methods require sampling from probability distributions and adopt…

Information Retrieval · Computer Science 2023-06-23 Hanwen Du , Huanhuan Yuan , Zhen Huang , Pengpeng Zhao , Xiaofang Zhou

In sequential recommendation systems, data augmentation and contrastive learning techniques have recently been introduced using diffusion models to achieve robust representation learning. However, most of the existing approaches use random…

Information Retrieval · Computer Science 2025-07-17 Jinkyeong Choi , Yejin Noh , Donghyeon Park