Author

Xinlong Xu

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Preprint Aug 2026

EviReform: Evidence-Guided Query Reformulation for Multi-Hop Graph Retrieval

Results show that observed evidence can guide graph retrieval toward the part of a supporting chain left underspecified by the original question, and introduce EviReform, which separates revising the retrieval request from aggregating evidence in the graph.

Xinlong Xu, Yoshua Y. Li · 0 citations

Preprint Aug 2026

RAGSieve: Self-Referenced Local Contrast for Knowledge-Poison Detection in Retrieval-Augmented Generation

This work presents RAGSieve, which constructs a reference matched to each detection scope, which requires poison labels, a trusted corpus, or training to be constructed.

Xinlong Xu, Yoshua Y. Li · 0 citations