Ronghua Lin , Chang Liu , Hao Zhong , Chengzhe Yuan , Guohua Chen , Yuncheng Jiang , Yong Tang
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引用次数: 0
Abstract
Session-based recommendation systems aim to predict users’ next interactions based on short-lived, anonymous sessions, a challenging yet vital task due to the sparsity and dynamic nature of user behavior. Existing Graph Neural Network (GNN)-based methods primarily focus on the session graphs while overlooking the influence of micro-structures and user behavior patterns. To address these limitations, we propose a Motif and Supernode-Enhanced Session-based Recommender System (MSERS), which constructs a global session graph, identifies and encodes motifs as supernodes, and reintegrates them into the global graph to enrich its topology and better represent item dependencies. By employing supernode-enhanced Gated Graph Neural Networks (GGNN), MSERS captures both long-term and latent item dependencies, significantly improving session representations. Extensive experiments on two real-world datasets demonstrate the superiority of MSERS over baseline methods, providing robust insights into the role of micro-structures in session-based recommendations.
期刊介绍:
Neural Networks is a platform that aims to foster an international community of scholars and practitioners interested in neural networks, deep learning, and other approaches to artificial intelligence and machine learning. Our journal invites submissions covering various aspects of neural networks research, from computational neuroscience and cognitive modeling to mathematical analyses and engineering applications. By providing a forum for interdisciplinary discussions between biology and technology, we aim to encourage the development of biologically-inspired artificial intelligence.