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Demonstrates improved robustness of query routing in multi-collection RAG systems, indicating better performance under corpus drift.
his paper introduces the Master Assistant Agent (MAA), a drift-free query routing architecture for multi-collection Retrieval-Augmented Generation (RAG) systems. Unlike existing routers that rely on static descriptions, utterances, prototypes, or classifiers, MAA routes using live corpus evidence obtained through parallel collection probing. Experimental evaluation demonstrates substantially improved robustness under corpus drift compared with representative utterance-based routing approaches
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Umang Chaudhari (2026) studied this question.
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