Graph embedding techniques for LLM retrieval
Graph embedding techniques aim to represent the nodes of a graph in a low-dimensional vector space, capturing the graph’s structural properties and relationships. Several methods exist, each with its own approach – for instance, Node2Vec explores neighborhoods through biased random walks, balancing breadth-first and depth-first exploration. DeepWalk is another random-walk-based approach but performs walks uniformly. Graph convolutional networks (GCNs) aggregate information from a node’s neighbors using convolutional operations, learning node embeddings based on the graph’s structure and node features. Graph attention networks (GATs) extend GCNs by incorporating an attention mechanism to weigh the importance of different neighbors when aggregating information. Translating Embeddings for Knowledge Graphs (TransE) is specifically designed for knowledge graphs, representing entities and relations as vectors such that...