Knowledge-aware Dual-side Attribute-enhanced Recommendation

Knowledge-aware recommendation methods (KGR) based on graph neural networks (GNNs) and contrastive learning (CL) have achieved promising performance. However, they fall short in modeling fine-grained user preferences and further fail to leverage the preference-attribute connection to make predictions, leading to sub-optimal performance. To address the issue, we propose a method named {Knowledge-aware Dual-side Attribute-enhanced Recommendation} (KDAR). Specifically, we build user preference representations and attribute fusion representations upon the attribute information in knowledge graphs, which are utilized to enhance collaborative filtering (CF) based user and item representations, respectively. To discriminate the contribution of each attribute in these two types of attribute-based representations, a multi-level collaborative alignment contrasting mechanism is proposed to align the importance of attributes with CF signals. Experimental results on four benchmark datasets demonstrate the superiority of KDAR over several state-of-the-art baselines. Further analyses verify the effectiveness of our method. The code of KDAR is released at: {https://github.com/TJTP/KDAR}{https://github.com/TJTP/KDAR}.