출처:https://arxiv.org/abs/2002.02126 LightGCN: Simplifying and Powering Graph Convolution Network for Recommendation 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 arxiv.org ABSTACT GCN은 col..