LLM for Knowledge graph building

[xyzhu68]

In the configuration of the knowledge base, if I select "Extract knowlege graph", a knowlege graph will be built for the dataset. This requires using LLM APIs. But one cannot configure, which LLM to use. Dose the ragflow use the default LLM automatically? It is better, if the users are informed, that LLM APIs will be called when building graph.

[ZhenhangTung]

https://ragflow.io/docs/dev/construct_knowledge_graph#prerequisites