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Session-based recommendation focuses on predicting the next item a user will interact with based on sequences of anonymous user sessions. A significant challenge in this field is data sparsity due to the typically short-term interactions.…

Information Retrieval · Computer Science 2024-12-17 Zhe Yang , Tiantian Liang

The sequential recommendation systems capture users' dynamic behavior patterns to predict their next interaction behaviors. Most existing sequential recommendation methods only exploit the local context information of an individual…

Information Retrieval · Computer Science 2022-06-08 Yixin Zhang , Yong Liu , Yonghui Xu , Hao Xiong , Chenyi Lei , Wei He , Lizhen Cui , Chunyan Miao

Session-based recommendation aims at predicting the next item given a sequence of previous items consumed in the session, e.g., on e-commerce or multimedia streaming services. Specifically, session data exhibits some unique characteristics,…

Information Retrieval · Computer Science 2021-06-28 Minjin Choi , jinhong Kim , Joonseok Lee , Hyunjung Shim , Jongwuk Lee

Session-based recommendation nowadays plays a vital role in many websites, which aims to predict users' actions based on anonymous sessions. There have emerged many studies that model a session as a sequence or a graph via investigating…

Information Retrieval · Computer Science 2020-05-20 Feng Yu , Yanqiao Zhu , Qiang Liu , Shu Wu , Liang Wang , Tieniu Tan

Session-based recommendation is a practical recommendation task that predicts the next item based on an anonymous behavior sequence, and its performance relies heavily on the transition information between items in the sequence. The SOTA…

Information Retrieval · Computer Science 2022-04-06 Ansong Li

Session-based recommendation (SBR) is a challenging task, which aims at recommending items based on anonymous behavior sequences. Almost all the existing solutions for SBR model user preference only based on the current session without…

Information Retrieval · Computer Science 2021-06-10 Ziyang Wang , Wei Wei , Gao Cong , Xiao-Li Li , Xian-Ling Mao , Minghui Qiu

Session-based recommendation (SBR) aims at predicting the next item for an ongoing anonymous session. The major challenge of SBR is how to capture richer relations in between items and learn ID-based item embeddings to capture such…

Information Retrieval · Computer Science 2022-02-22 Zizhuo Zhang , Bang Wang

In recommendation, graph-based Collaborative Filtering (CF) methods mitigate the data sparsity by introducing Graph Contrastive Learning (GCL). However, the random negative sampling strategy in these GCL-based CF models neglects the…

Information Retrieval · Computer Science 2023-10-25 Lei Han , Hui Yan , Zhicheng Qiao

Session-based recommendation (SBR) aims to predict the next item at a certain time point based on anonymous user behavior sequences. Existing methods typically model session representation based on simple item transition information.…

Information Retrieval · Computer Science 2023-11-07 Fuyun Wang , Xingyu Gao , Zhenyu Chen , Lei Lyu

Graph-based and sequential methods are two popular recommendation paradigms, each excelling in its domain but lacking the ability to leverage signals from the other. To address this, we propose a novel method that integrates both approaches…

Information Retrieval · Computer Science 2025-01-30 Yuwei Cao , Liangwei Yang , Zhiwei Liu , Yuqing Liu , Chen Wang , Yueqing Liang , Hao Peng , Philip S. Yu

Contrastive learning (CL) has recently been demonstrated critical in improving recommendation performance. The underlying principle of CL-based recommendation models is to ensure the consistency between representations derived from…

Information Retrieval · Computer Science 2023-06-21 Junliang Yu , Xin Xia , Tong Chen , Lizhen Cui , Nguyen Quoc Viet Hung , Hongzhi Yin

Graph-based social recommendation systems have shown significant promise in enhancing recommendation performance, particularly in addressing the issue of data sparsity in user behaviors. Typically, these systems leverage Graph Neural…

Information Retrieval · Computer Science 2025-04-29 Yonghui Yang , Le Wu , Yuxin Liao , Zhuangzhuang He , Pengyang Shao , Richang Hong , Meng Wang

Session-based recommender systems (SBRSs) predict users' next interacted items based on their historical activities. While most SBRSs capture purchasing intentions locally within each session, capturing items' global information across…

Information Retrieval · Computer Science 2024-02-20 Yu Wang , Amin Javari , Janani Balaji , Walid Shalaby , Tyler Derr , Xiquan Cui

Session-based recommendation systems aim to model users' interests based on their sequential interactions to predict the next item in an ongoing session. In this work, we present a novel approach that can be used in session-based…

Information Retrieval · Computer Science 2024-08-31 Begüm Özbay , Resul Tugay , Şule Gündüz Öğüdücü

Locally supervised learning aims to train a neural network based on a local estimation of the global loss function at each decoupled module of the network. Auxiliary networks are typically appended to the modules to approximate the gradient…

Machine Learning · Computer Science 2022-08-02 Hasnain Irshad Bhatti , Jaekyun Moon

Graph Neural Networks (GNNs) are powerful tools for recommendation systems, but they often struggle under data sparsity and noise. To address these issues, we implemented LightGCL, a graph contrastive learning model that uses Singular Value…

Information Retrieval · Computer Science 2025-06-03 Aravinda Jatavallabha , Prabhanjan Bharadwaj , Ashish Chander

Session-based recommendations have been widely adopted for various online video and E-commerce Websites. Most existing approaches are intuitively proposed to discover underlying interests or preferences out of the anonymous session data.…

Information Retrieval · Computer Science 2022-02-25 Liqi Yang , Linhan Luo , Lifeng Xin , Xiaofeng Zhang , Xinni Zhang

Graph Neural Networks (GNNs) have been shown as promising solutions for collaborative filtering (CF) with the modeling of user-item interaction graphs. The key idea of existing GNN-based recommender systems is to recursively perform the…

Information Retrieval · Computer Science 2022-08-01 Lianghao Xia , Chao Huang , Chuxu Zhang

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…

Information Retrieval · Computer Science 2024-04-29 Weizhi Zhang , Liangwei Yang , Zihe Song , Henry Peng Zou , Ke Xu , Yuanjie Zhu , Philip S. Yu

Recommender systems are essential to various fields, e.g., e-commerce, e-learning, and streaming media. At present, graph neural networks (GNNs) for session-based recommendations normally can only recommend items existing in users'…

Information Retrieval · Computer Science 2023-05-11 Di Jin , Luzhi Wang , Yizhen Zheng , Guojie Song , Fei Jiang , Xiang Li , Wei Lin , Shirui Pan