IEEE/ICACT20260275 Slide.14        [Big Slide]       Oral Presentation
Finally, we compares three user aggregation methods: First Hidden Representation, Mean Pooling, and Attention-Based Aggregation. Across all metrics, Mean Pooling shows the most stable performance on both datasets. While attention-based aggregation occasionally performs well on Pet Supplies, it lacks consistency. On Tools and Home Improvement, Mean Pooling consistently achieves the best results.

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