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cs.IR2026
STITCH-RAG: Spatio-Temporal Influence Tracing over Topic Hypergraphs for Multi-Hop Retrieval-Augmented Generation
Haodong Yang, Mengzhu Chen, Jia Cai
Multi-hop retrieval-augmented generation requires a retriever to connect evidence distributed across documents while preserving a concise, faithful generation context. Existing ind…
cs.IR2026
FlexStructRAG: Flexible Structure-Aware Multi-Granular Relational Retrieval for RAG
Mengzhu Chen, Haodong Yang, Jia Cai +1
Retrieval-Augmented Generation (RAG) systems critically depend on how external knowledge is segmented, structured, and retrieved. Most existing approaches either retrieve fixed-len…