Table 3. Ablation study.

To enhance the clarity of the experimental results, the optimal results for each dataset are highlighted in bold, and the suboptimal ones are indicated with underlining.

Model	MovieLens 1M		Book-crossing		Taobao
	AUC	NDCG@10	AUC	NDCG@10	AUC	NDCG@10
GNN-A2-Attention	0.9053	0.9457	0.8253	0.9108	0.6682	0.1501
GNN-A2-Fusion	0.9072	0.9415	0.8307	0.9061	0.6693	0.1497
GNN-A2-Broad	0.9087	0.9403	0.8341	0.9032	0.6706	0.1485
GNN-A2	0.9101	0.9506	0.8400	0.9137	0.6715	0.1526