Hao-Dong Yang

STITCH-RAG: Spatio-Temporal Influence Tracing over Topic Hypergraphs for Multi-Hop Retrieval-Augmented Generation

STITCH-RAG is proposed, a hypergraph-based framework with three coupled components that combines topic-space propagation with deterministic chunk-index linkage across name-equivalent states under frequency-adaptive decay and characterize the condition under which this prior assigns more PPR mass to ground-truth evidenc...