A three-tier lexical graph with statement- and topic-level retrievers improves multi-hop question answering over chunk-based RAG, though the headline 23.1% relative gain is ambiguous.
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Hierarchical Lexical Graph for Enhanced Multi-Hop Retrieval
A three-tier lexical graph with statement- and topic-level retrievers improves multi-hop question answering over chunk-based RAG, though the headline 23.1% relative gain is ambiguous.