# Graph Embeddings for the Collaborative Axis of KGD-BMTP

The collaborative axis uses embeddings learned from a user-item graph with the following configuration:

- **Embedding model**: LightGCN [1]

- **Embedding dimension**: 256

- **Nodes**: Drawn from the full corpus.

- **Edges**: Built from interactions in the training split only, preventing train-test leakage.

> [1] Xiangnan He, Kuan Deng ,Xiang Wang, Yan Li, Yongdong Zhang, Meng Wang(2020). LightGCN: Simplifying and Powering Graph Convolution Network for Recommendation