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Modeling time-evolving preferences of users with their sequential item interactions, has attracted increasing attention in many online applications. Hence, sequential recommender systems have been developed to learn the dynamic user…

Information Retrieval · Computer Science 2022-06-07 Lianghao Xia , Chao Huang , Yong Xu , Jian Pei

Recommendation Systems have become integral to modern user experiences, but lack transparency in their decision-making processes. Existing explainable recommendation methods are hindered by reliance on a post-hoc paradigm, wherein…

Information Retrieval · Computer Science 2024-12-04 Xiaohan Yu , Li Zhang , Chong Chen

In recent years, text-aware collaborative filtering methods have been proposed to address essential challenges in recommendations such as data sparsity, cold start problem, and long-tail distribution. However, many of these text-oriented…

Information Retrieval · Computer Science 2020-09-01 Zhimeng Pan , Wenzheng Tao , Qingyao Ai

Recommender systems have been widely applied in different real-life scenarios to help us find useful information. In particular, Reinforcement Learning (RL) based recommender systems have become an emerging research topic in recent years,…

Information Retrieval · Computer Science 2023-06-13 Yuanguo Lin , Yong Liu , Fan Lin , Lixin Zou , Pengcheng Wu , Wenhua Zeng , Huanhuan Chen , Chunyan Miao

With the prevalence of Internet of Things (IoT)-based social media applications, the distance among people has been greatly shortened. As a result, recommender systems in IoT-based social media need to be developed oriented to groups of…

Information Retrieval · Computer Science 2021-04-26 Zhiwei Guo , Keping Yu , Tan Guo , Ali Kashif Bashir , Muhammad Imran , Mohsen Guizani

Generative Recommendation (GR) reformulates recommendation as a next-token generation problem and has shown promise in industrial applications. However, extending GR to industrial advertising is non-trivial because the system must optimize…

Package-to-group recommender systems recommend a set of unified items to a group of people. Different from conventional settings, it is not easy to measure the utility of group recommendations because it involves more than one user. In…

Information Retrieval · Computer Science 2021-12-30 Ryoma Sato

Cross-domain recommendation (CDR) is crucial for improving recommendation accuracy and generalization, yet traditional methods are often hindered by the reliance on shared user/item IDs, which are unavailable in most real-world scenarios.…

Information Retrieval · Computer Science 2025-11-18 Peiyu Hu , Wayne Lu , Jia Wang

Data-driven individualized decision making has recently received increasing research interests. Most existing methods rely on the assumption of no unmeasured confounding, which unfortunately cannot be ensured in practice especially in…

Methodology · Statistics 2022-12-26 Zhengling Qi , Rui Miao , Xiaoke Zhang

ChatGPT has achieved remarkable success in natural language understanding. Considering that recommendation is indeed a conversation between users and the system with items as words, which has similar underlying pattern with ChatGPT, we…

Information Retrieval · Computer Science 2024-04-16 Yabin Zhang , Wenhui Yu , Erhan Zhang , Xu Chen , Lantao Hu , Peng Jiang , Kun Gai

Sequential recommendation effectively addresses information overload by modeling users' temporal and sequential interaction patterns. To overcome the limitations of supervision signals, recent approaches have adopted self-supervised…

Information Retrieval · Computer Science 2024-06-03 Yuxi Liu , Lianghao Xia , Chao Huang

Human visual recognition system shows astonishing capability of compressing visual information into a set of tokens containing rich representations without label supervision. One critical driving principle behind it is perceptual grouping.…

Computer Vision and Pattern Recognition · Computer Science 2024-01-26 Zhiwei Deng , Ting Chen , Yang Li

Generative recommendation (GR) has shown strong potential for sequential recommendation in an end-to-end generation paradigm. However, existing GR models suffer from severe cold-start collapse: their recommendation accuracy on cold-start…

Information Retrieval · Computer Science 2026-05-04 Chenglei Shen , Teng Shi , Weijie Yu , Xiao Zhang , Jun Xu

Multi-task learning (MTL) is a common machine learning technique that allows the model to share information across different tasks and improve the accuracy of recommendations for all of them. Many existing MTL implementations suffer from…

Information Retrieval · Computer Science 2025-04-09 Luyang Wang , Cangcheng Tang , Chongyang Zhang , Jun Ruan , Kai Huang , Jason Dai

Unsupervised person re-identification (re-ID) remains a challenging task. While extensive research has focused on the framework design and loss function, this paper shows that sampling strategy plays an equally important role. We analyze…

Computer Vision and Pattern Recognition · Computer Science 2024-12-06 Xumeng Han , Xuehui Yu , Guorong Li , Jian Zhao , Gang Pan , Qixiang Ye , Jianbin Jiao , Zhenjun Han

While recommender systems (RSs) traditionally rely on extensive individual user data, regulatory and technological shifts necessitate reliance on aggregated user information. This shift significantly impacts the recommendation process,…

Information Retrieval · Computer Science 2025-02-27 Gur Keinan , Omer Ben-Porat

As a pivotal tool to alleviate the information overload problem, recommender systems aim to predict user's preferred items from millions of candidates by analyzing observed user-item relations. As for alleviating the sparsity and cold start…

Information Retrieval · Computer Science 2022-05-24 Yue Deng

Recommendation systems are essential tools in modern e-commerce, facilitating personalized user experiences by suggesting relevant products. Recent advancements in generative models have demonstrated potential in enhancing recommendation…

Information Retrieval · Computer Science 2025-11-25 Zida Liang , Changfa Wu , Dunxian Huang , Weiqiang Sun , Ziyang Wang , Yuliang Yan , Jian Wu , Yuning Jiang , Bo Zheng , Ke Chen , Silu Zhou , Yu Zhang

Training sequential recommenders such as SASRec with uniform sample weights achieves good overall performance but can fall short on specific user groups. One such example is popularity bias, where mainstream users receive better…

Information Retrieval · Computer Science 2025-01-31 Krishna Acharya , David Wardrope , Timos Korres , Aleksandr Petrov , Anders Uhrenholt

Sequential recommendation is a task to capture hidden user preferences from historical user item interaction data and recommend next items for the user. Significant progress has been made in this domain by leveraging classification based…

Information Retrieval · Computer Science 2024-08-30 Panfeng Cao , Pietro Lio