Sequential recommendation aims to recommend items to users by taking into account the order of their previous interactions. Despite their success, most of the traditional approaches fail to capture a user’s dynamic context due to the limited availability of interaction sequences. Cross-domain recommendation (CDR) aims to enhance the recommendation quality in the target domain by harnessing data from several other diverse domains. However, a notable challenge in CDR is to accurately capture intra-sequence and inter-sequence item interactions across different domains. This paper tackles this challenge by simultaneously learning individual and cross-domain user preferences. We propose a lightweight Graph Neural Network (GNN) that exploits valuable intra-sequence and inter-sequence patterns. Our proposed lightweight GNN streamlines complexity while enhancing recommendation accuracy across diverse experimental scenarios. Extensive experiments corroborate our claim.

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LightGCN-Based Contrastive Cross-Domain Sequential Recommender System

  • Saumya Raval,
  • Venkateswara Rao Kagita,
  • Vikas Kumar

摘要

Sequential recommendation aims to recommend items to users by taking into account the order of their previous interactions. Despite their success, most of the traditional approaches fail to capture a user’s dynamic context due to the limited availability of interaction sequences. Cross-domain recommendation (CDR) aims to enhance the recommendation quality in the target domain by harnessing data from several other diverse domains. However, a notable challenge in CDR is to accurately capture intra-sequence and inter-sequence item interactions across different domains. This paper tackles this challenge by simultaneously learning individual and cross-domain user preferences. We propose a lightweight Graph Neural Network (GNN) that exploits valuable intra-sequence and inter-sequence patterns. Our proposed lightweight GNN streamlines complexity while enhancing recommendation accuracy across diverse experimental scenarios. Extensive experiments corroborate our claim.