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News/PRO-Step: Step-level Process Reward Optimization for Retrieval-Augmented Generation
arxiv
PublishedSeptember 3, 2026 at 4:00 AM
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PRO-Step: Step-level Process Reward Optimization for Retrieval-Augmented Generation

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arXiv:2609.01658v1 Announce Type: cross Abstract: Retrieval-Augmented Generation enhances Large Language Models by grounding responses in external knowledge, but multi-hop reasoning remains vulnerable to error propagation, where early retrieval failures confound subsequent steps. Standard outcome-ba

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