graph_emb/README.md

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