What is the functional mechanism of LazyGraphRAG?
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Answers ( 1 )
LazyGraphRAG's functional mechanism involves two main aspects:
1. **Index Construction**: It uses natural language processing (NLP) to extract concepts and co-occurrence relationships, optimizes the concept graph using graph statistics, and extracts hierarchical community structures without relying on LLMs for summary generation.
2. **Query Processing**: During queries, LazyGraphRAG refines the query using LLMs, ranks text fragments by similarity, evaluates relevance using LLMs, and recursively explores sub-communities until the budget limit is reached or no relevant communities are left. The answer is generated by constructing a concept subgraph, grouping text fragments by community, extracting claims, and ranking and filtering them to provide context.