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arXiv · 2603.20673

PAVE: Premise-Aware Validation and Editing for Retrieval-Augmented LLMs

Tianyi Huang·Caden Yang·Emily Yin·Eric Wang·Michael Zhang
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Abstract

Retrieval-augmented language models can retrieve relevant evidence yet still commit to answers before explicitly checking whether the retrieved context supports the conclusion. We present PAVE (Premise-Grounded Answer Validation and Editing), an inference-time validation layer for evidence-grounded question answering. PAVE decomposes retrieved context into question-conditioned atomic facts, drafts an answer, scores how well that draft is supported by the extracted premises, and revises low-support outputs before finalization. The resulting trace makes answer commitment auditable at the level of explicit premises, support scores, and revision decisions. In controlled ablations with a fixed retriever and backbone, PAVE outperforms simpler post-retrieval baselines in two evidence-grounded QA settings, with the largest gain reaching 32.7 accuracy points on a span-grounded benchmark. We view these findings as proof-of-concept evidence that explicit premise extraction plus support-gated revision can strengthen evidence-grounded consistency in retrieval-augmented LLM systems.

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Tianyi Huang, Caden Yang, Emily Yin, Eric Wang, Michael Zhang. 2026-04-02. PAVE: Premise-Aware Validation and Editing for Retrieval-Augmented LLMs. https://arxiv.org/abs/2603.20673

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