LightGCN
LightGCN
**LightGCN** is a type of [graph convolutional neural network](https://paperswithcode.com/method/gcn) (GCN), including only the most essential component in GCN (neighborhood aggregation) for collaborative filtering. Specifically, LightGCN learns user and item embeddings by linearly propagating them on the user-item interaction graph, and uses the weighted sum of the embeddings learned at all layers as the final embedding.
LightGCN: Simplifying and Powering Graph Convolution Network for Recommendation
https://paperswithcode.com/paper/lightgcn-simplifying-and-powering-graph
LightGCN: Simplifying and Powering Graph Convolution Network for Recommendation