TLDR:Knowledge graphs may not significantly impact context retrieval — all knowledge graph RAG methods I examined showed similar context relevancy scores to those of FAISS (~0.74). Neo4j withOUT its own index achieves a higher answer relevancy score (0.93) but an 8% lift over FAISS may not be worth the ROI constraints. This score is compared to Neo4j WITH index (0.74) and FAISS (0.87), suggesting
![GraphRAG Analysis, Part 1: How Indexing Elevates Knowledge Graph Performance in RAG](https://cdn-ak-scissors.b.st-hatena.com/image/square/ce9e6e4aa761ba467ea005403557949cec0782df/height=288;version=1;width=512/https%3A%2F%2Fsubstackcdn.com%2Fimage%2Ffetch%2Fw_1200%2Ch_600%2Cc_fill%2Cf_jpg%2Cq_auto%3Agood%2Cfl_progressive%3Asteep%2Cg_auto%2Fhttps%253A%252F%252Fsubstack-post-media.s3.amazonaws.com%252Fpublic%252Fimages%252Ff095957a-d5fc-4f78-9798-93c7c916913e_1480x792.png)