2020/07/25 by Xiangnan He, Kuan Deng, Xiang Wang +3 · 132 citations
Computer Science · #Advanced Graph Neural Networks #Image and Video Quality Assessment #Recommender Systems and Techniques
paper · doi:10.1145/3397271.3401063
openalex publication_date 2020/07/25 · openalex created_date 2020/07/29 · openalex updated_date 2026/07/31
Graph Convolution Network (GCN) has become new state-of-the-art for collaborative filtering. Nevertheless, the reasons of its effectiveness for recommendation are not well understood. Existing work that adapts GCN to recommendation lacks thorough ablation analyses on GCN, which is originally designed for graph classification tasks and equipped with many neural network operations. However, we empirically find that the two most common designs in GCNs -- feature transformation and nonlinear activation -- contribute little to the performance of collaborative filtering. Even worse, including them adds to the difficulty of training and degrades recommendation performance.