Knowledge Graph (KG)-based recommendation systems (RS) leverage auxiliary information to address sparsity and cold-start issues. While prior work have enhanced user and item representations using multi-hop neighborhoods, they often neglect items’ inherent attractiveness to user groups. To tackle these gaps, we propose an attention-augmented KG recommendation framework that refines user and item representations through three perspectives: user preferences, item attractiveness, and higher-order KG structure. We employ a self-attention mechanism in a user preference module to model user-specific tendencies from interaction records, an attention-based item attractiveness module to highlight items’ appeal to user groups, and graph attention networks to aggregate semantic information from KG entity-relation attributes across multiple layers. Experiments on three real-world datasets show this framework outperforms baselines in click-through rate and Top-K recommendation tasks, validating our multi-perspective enhancement.

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Multi-perspective Attention-Enhanced Knowledge Graph-Based Recommendation

  • Dong Li,
  • Xiaochun Gan,
  • Hao Liu,
  • Sheng Liu

摘要

Knowledge Graph (KG)-based recommendation systems (RS) leverage auxiliary information to address sparsity and cold-start issues. While prior work have enhanced user and item representations using multi-hop neighborhoods, they often neglect items’ inherent attractiveness to user groups. To tackle these gaps, we propose an attention-augmented KG recommendation framework that refines user and item representations through three perspectives: user preferences, item attractiveness, and higher-order KG structure. We employ a self-attention mechanism in a user preference module to model user-specific tendencies from interaction records, an attention-based item attractiveness module to highlight items’ appeal to user groups, and graph attention networks to aggregate semantic information from KG entity-relation attributes across multiple layers. Experiments on three real-world datasets show this framework outperforms baselines in click-through rate and Top-K recommendation tasks, validating our multi-perspective enhancement.