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In recent years, bundle recommendation systems have gained significant attention in both academia and industry due to their ability to enhance user experience and increase sales by recommending a set of items as a bundle rather than…

Information Retrieval · Computer Science 2026-02-27 Meng Sun , Lin Li , Ming Li , Xiaohui Tao , Dong Zhang , Qing Xie , Peipei Wang , Jimmy Xiangji Huang

Beyond user-item modeling, item-to-item relationships are increasingly used to enhance recommendation. However, common methods largely rely on co-occurrence, making them prone to item popularity bias and user attributes, which degrades…

Information Retrieval · Computer Science 2025-12-22 Jingmao Zhang , Zhiting Zhao , Yunqi Lin , Jianghong Ma , Tianjun Wei , Haijun Zhang , Xiaofeng Zhang

Contrastive learning (CL) has shown its power in recommendation. However, most CL-based recommendation models build their CL tasks merely focusing on the user's aspects, ignoring the rich diverse information in items. In this work, we…

Information Retrieval · Computer Science 2023-01-18 Ruobing Xie , Zhijie Qiu , Bo Zhang , Leyu Lin

A well-designed recommender system can accurately capture the attributes of users and items, reflecting the unique preferences of individuals. Traditional recommendation techniques usually focus on modeling the singular type of behaviors…

Information Retrieval · Computer Science 2023-03-06 Hongrui Xuan , Yi Liu , Bohan Li , Hongzhi Yin

Graph Contrastive Learning (GCL), which fuses graph neural networks with contrastive learning, has evolved as a pivotal tool in user-item recommendations. While promising, existing GCL methods often lack explicit modeling of hierarchical…

Information Retrieval · Computer Science 2025-05-27 Jiawei Xue , Zhen Yang , Haitao Lin , Ziji Zhang , Luzhu Wang , Yikun Gu , Yao Xu , Xin Li

Session-based recommendation techniques aim to capture dynamic user behavior by analyzing past interactions. However, existing methods heavily rely on historical item ID sequences to extract user preferences, leading to challenges such as…

Information Retrieval · Computer Science 2023-07-21 Zhipeng Zhang , Piao Tong , Yingwei Ma , Qiao Liu , Xujiang Liu , Xu Luo

Personalized recommender systems play a crucial role in capturing users' evolving preferences over time to provide accurate and effective recommendations on various online platforms. However, many recommendation models rely on a single type…

Information Retrieval · Computer Science 2023-10-23 Wei Wei , Lianghao Xia , Chao Huang

Accurately modeling users' evolving preferences from sequential interactions remains a central challenge in recommender systems. Recent studies emphasize the importance of capturing multiple latent intents underlying user behaviors.…

Information Retrieval · Computer Science 2026-04-21 Shanfan Zhang , Yongyi Lin , Yuan Rao

Recent methods utilize graph contrastive Learning within graph-structured user-item interaction data for collaborative filtering and have demonstrated their efficacy in recommendation tasks. However, they ignore that the difference relation…

Information Retrieval · Computer Science 2024-03-25 Jiaheng Yu , Jing Li , Yue He , Kai Zhu , Shuyi Zhang , Wen Hu

In business analysis, providing effective recommendations is essential for enhancing company profits. The utilization of graph-based structures, such as bipartite graphs, has gained popularity for their ability to analyze complex data…

Information Retrieval · Computer Science 2025-01-14 Jiayang Wu , Wensheng Gan , Huashen Lu , Philip S. Yu

A well-informed recommendation framework could not only help users identify their interested items, but also benefit the revenue of various online platforms (e.g., e-commerce, social media). Traditional recommendation models usually assume…

Information Retrieval · Computer Science 2022-03-29 Wei Wei , Chao Huang , Lianghao Xia , Yong Xu , Jiashu Zhao , Dawei Yin

Learning effective latent representations for users and items is the cornerstone of recommender systems. Traditional approaches rely on user-item interaction data to map users and items into a shared latent space, but the sparsity of…

Information Retrieval · Computer Science 2025-04-24 Hoang V. Dong , Yuan Fang , Hady W. Lauw

Session-based recommendation (SBR) aims to capture dynamic user preferences by analyzing item sequences within individual sessions. However, most existing approaches focus mainly on intra-session item relationships, neglecting the…

Information Retrieval · Computer Science 2025-05-28 Wooseong Yang , Chen Wang , Zihe Song , Weizhi Zhang , Philip S. Yu

Product bundling has been a prevailing marketing strategy that is beneficial in the online shopping scenario. Effective product bundling methods depend on high-quality item representations, which need to capture both the individual items'…

Information Retrieval · Computer Science 2024-04-03 Yunshan Ma , Yingzhi He , Wenjun Zhong , Xiang Wang , Roger Zimmermann , Tat-Seng Chua

Sequential recommendation (SR) aims to predict the subsequent behaviors of users by understanding their successive historical behaviors. Recently, some methods for SR are devoted to alleviating the data sparsity problem (i.e., limited…

Information Retrieval · Computer Science 2022-08-30 Ziyang Wang , Huoyu Liu , Wei Wei , Yue Hu , Xian-Ling Mao , Shaojian He , Rui Fang , Dangyang chen

Existing solutions for bundle recommendation (BR) have achieved remarkable effectiveness for predicting the user's preference for prebuilt bundles. However, bundle-item (B-I) affiliation will vary dynamically in real scenarios. For example,…

Information Retrieval · Computer Science 2026-01-06 Dong Zhang , Lin Li , Ming Li , Amran Bhuiyan , Meng Sun , Xiaohui Tao , Jimmy Xiangji Huang

Multi-behavior recommendation (MBR) aims to jointly consider multiple behaviors to improve the target behavior's performance. We argue that MBR models should: (1) model the coarse-grained commonalities between different behaviors of a user,…

Information Retrieval · Computer Science 2022-03-22 Yiqing Wu , Ruobing Xie , Yongchun Zhu , Xiang Ao , Xin Chen , Xu Zhang , Fuzhen Zhuang , Leyu Lin , Qing He

In recent years, graph contrastive learning (GCL) has received increasing attention in recommender systems due to its effectiveness in reducing bias caused by data sparsity. However, most existing GCL models rely on heuristic approaches and…

Information Retrieval · Computer Science 2024-07-23 Jiakai Tang , Sunhao Dai , Zexu Sun , Xu Chen , Jun Xu , Wenhui Yu , Lantao Hu , Peng Jiang , Han Li

Recommendation systems are highly interested in technology companies nowadays. The businesses are constantly growing users and products, causing the number of users and items to continuously increase over time, to very large numbers.…

Information Retrieval · Computer Science 2024-01-19 Vu Hong Quan , Le Hoang Ngan , Le Minh Duc , Nguyen Tran Ngoc Linh , Hoang Quynh-Le

Multi-behavioral recommendation optimizes user experiences by providing users with more accurate choices based on their diverse behaviors, such as view, add to cart, and purchase. Current studies on multi-behavioral recommendation mainly…

Information Retrieval · Computer Science 2024-04-19 Shunpan Liang , Junjie Zhao , Chen Li , Yu Lei