Advanced RAG: Corrective Retrieval Augmented Generation (CRAG) with LangGraph

CRAG enhances the traditional RAG by introducing a retrieval evaluator to assess the relationship between the retrieved documents and the query. It also introduces a knowledge refinement algorithm and knowledge searching to improve the accuracy of the generated response. LangGraph is an extension of the LangChain ecosystem that allows the building of AI apps as a graph, treating workflows as a cyclic Graph structure.