一作SIGIR 2026Poster· Information Retrieval (Short)
StAR: Adaptive Structure-Aware Reranking for Semantic–Structural Alignment in GraphRAG
Junghyun Oh · Sungsu Lim
摘要
Retrieval-Augmented Generation (RAG) often struggles with multi-hop reasoning because Euclidean embeddings collapse hierarchical structure and let semantic similarity dominate ranking, leading to semantic–structural misalignment. As a result, structurally irrelevant yet semantically similar candi...