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Recommender systems (RSs) are intelligent filtering methods that suggest items to users based on their inferred preferences, derived from their interaction history on the platform. Collaborative filtering-based RSs rely on users past…

信息检索 · 计算机科学 2025-11-03 Alireza Gharahighehi , Felipe Kenji Nakano , Xuehua Yang , Wenhan Cu , Celine Vens

The problem of session-based recommendation aims to predict user actions based on anonymous sessions. Previous methods model a session as a sequence and estimate user representations besides item representations to make recommendations.…

信息检索 · 计算机科学 2019-08-14 Shu Wu , Yuyuan Tang , Yanqiao Zhu , Liang Wang , Xing Xie , Tieniu Tan

Recommender systems play a crucial role in enabling personalized content delivery amidst the challenges of information overload and human mobility. Although conventional methods often rely on interaction matrices or graph-based retrieval,…

信息检索 · 计算机科学 2025-06-23 Tan Loc Nguyen , Tin T. Tran

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…

信息检索 · 计算机科学 2025-05-27 Jiawei Xue , Zhen Yang , Haitao Lin , Ziji Zhang , Luzhu Wang , Yikun Gu , Yao Xu , Xin Li

Predicting click-through rate (CTR) is the core task of many ads online recommendation systems, which helps improve user experience and increase platform revenue. In this type of recommendation system, we often encounter two main problems:…

信息检索 · 计算机科学 2024-01-17 Haowen Wang , Yuliang Du , Congyun Jin , Yujiao Li , Yingbo Wang , Tao Sun , Piqi Qin , Cong Fan

Cross-domain recommendation (CDR) methods predominantly leverage overlapping users to transfer knowledge from a source domain to a target domain. However, through empirical studies, we uncover a critical bias inherent in these approaches:…

信息检索 · 计算机科学 2025-07-24 Weixin Chen , Yuhan Zhao , Li Chen , Weike Pan

Global crises and regulatory developments require increased supply chain transparency and resilience. Companies do not only need to react to a dynamic environment but have to act proactively and implement measures to prevent production…

Cross-domain recommender (CDR) systems aim to transfer knowledge from data-rich domains to data-sparse ones, alleviating sparsity and cold-start issues present in conventional single-domain recommenders. However, many CDR approaches rely on…

信息检索 · 计算机科学 2026-03-03 Ziyin Xiao , Toyotaro Suzumura

Embedding based product recommendations have gained popularity in recent years due to its ability to easily integrate to large-scale systems and allowing nearest neighbor searches in real-time. The bulk of studies in this area has…

信息检索 · 计算机科学 2022-11-30 Giorgi Kvernadze , Putu Ayu G. Sudyanti , Nishan Subedi , Mohammad Hajiaghayi

Sequential Recommendation (SR) characterizes evolving patterns of user behaviors by modeling how users transit among items. However, the short interaction sequences limit the performance of existing SR. To solve this problem, we focus on…

信息检索 · 计算机科学 2022-09-22 Xiaolin Zheng , Jiajie Su , Weiming Liu , Chaochao Chen

The global Information and Communications Technology (ICT) supply chain is a complex network consisting of all types of participants. It is often formulated as a Social Network to discuss the supply chain network's relations, properties,…

计算机视觉与模式识别 · 计算机科学 2022-11-07 Bin Xiao , Yakup Akkaya , Murat Simsek , Burak Kantarci , Ala Abu Alkheir

Recent years have witnessed the remarkable success of recommendation systems (RSs) in alleviating the information overload problem. As a new paradigm of RSs, session-based recommendation (SR) specializes in users' short-term preference…

信息检索 · 计算机科学 2025-07-15 Zihao Li , Chao Yang , Yakun Chen , Xianzhi Wang , Hongxu Chen , Guandong Xu , Lina Yao , Quan Z. Sheng

Recommender systems (RecSys) play a vital role in online platforms, offering users personalized suggestions amidst vast information. Graph contrastive learning aims to learn from high-order collaborative filtering signals with unsupervised…

信息检索 · 计算机科学 2024-04-29 Weizhi Zhang , Liangwei Yang , Zihe Song , Henry Peng Zou , Ke Xu , Yuanjie Zhu , Philip S. Yu

We propose a novel software service recommendation model to help users find their suitable repositories in GitHub. Our model first designs a novel context-induced repository graph embedding method to leverage rich contextual information of…

信息检索 · 计算机科学 2021-12-21 Mingwei Zhang , Jiayuan Liu , Weipu Zhang , Ke Deng , Hai Dong , Ying Liu

Recipe recommendation systems play an essential role in helping people decide what to eat. Existing recipe recommendation systems typically focused on content-based or collaborative filtering approaches, ignoring the higher-order…

信息检索 · 计算机科学 2022-05-30 Yijun Tian , Chuxu Zhang , Zhichun Guo , Chao Huang , Ronald Metoyer , Nitesh V. Chawla

In the information explosion era, recommender systems (RSs) are widely studied and applied to discover user-preferred information. A RS performs poorly when suffering from the cold-start issue, which can be alleviated if incorporating…

机器学习 · 计算机科学 2021-08-27 Yu Wang , Zhiwei Liu , Ziwei Fan , Lichao Sun , Philip S. Yu

Cold-start problem is still a very challenging problem in recommender systems. Fortunately, the interactions of the cold-start users in the auxiliary source domain can help cold-start recommendations in the target domain. How to transfer…

信息检索 · 计算机科学 2021-12-21 Yongchun Zhu , Zhenwei Tang , Yudan Liu , Fuzhen Zhuang , Ruobing Xie , Xu Zhang , Leyu Lin , Qing He

Sequential recommender systems (SRS) have become the key technology in capturing user's dynamic interests and generating high-quality recommendations. Current state-of-the-art sequential recommender models are typically based on a…

信息检索 · 计算机科学 2020-05-27 Yang Sun , Fajie Yuan , Min Yang , Guoao Wei , Zhou Zhao , Duo Liu

Multi-Target Cross Domain Recommendation(CDR) has attracted a surge of interest recently, which intends to improve the recommendation performance in multiple domains (or systems) simultaneously. Most existing multi-target CDR frameworks…

信息检索 · 计算机科学 2023-02-14 Wujiang Xu , Shaoshuai Li , Mingming Ha , Xiaobo Guo , Qiongxu Ma , Xiaolei Liu , Linxun Chen , Zhenfeng Zhu

Cross-device user matching is a critical problem in numerous domains, including advertising, recommender systems, and cybersecurity. It involves identifying and linking different devices belonging to the same person, utilizing sequence…

机器学习 · 计算机科学 2023-10-23 Ali Taghibakhshi , Mingyuan Ma , Ashwath Aithal , Onur Yilmaz , Haggai Maron , Matthew West