When Knowledge Is Not Free: Cost-Aware Evidence Selection in Retrieval-Augmented Generation 事件

When Knowledge Is Not Free: Cost-Aware Evidence Selection in Retrieval-Augmented Generation arXiv:2606.02245v1 Announce Type: new Abstract: Retrieval-Augmented Generation (RAG) typically assumes that external knowledge is free, but many high-quality sources are paywalled, licensed, restricted, or otherwise costly to access. We introduce cost-aware RAG, a setting where retrieved evidence is assigned access-cost tiers and systems must answer under an explicit evidence-access budget. We instantiat