RealRoute: Retrieve-then-Verify System for RAG Query Routing
Researchers have introduced RealRoute, a framework that shifts query routing in Retrieval-Augmented Generation (RAG) from predictive to a retrieve-then-verify paradigm. Traditional LLM-as-a-Router methods dispatch sub-queries to specific sources based on semantic meaning, but often fail when source boundaries are ambiguous. RealRoute performs parallel, source-agnostic retrieval to ensure evidence completeness, then uses a dynamic verifier to cross-check results and synthesize factually grounded answers. The system is designed to handle heterogeneous sources such as private databases, global corpora, and APIs. A demonstration allows users to visualize real-time routing and verification. The work is published on arXiv (2604.20860).
Key facts
- RealRoute uses a retrieve-then-verify paradigm instead of predictive routing.
- It performs parallel, source-agnostic retrieval for evidence completeness.
- A dynamic verifier cross-checks results and synthesizes answers.
- Designed for heterogeneous sources: private databases, global corpora, APIs.
- Traditional LLM-as-a-Router methods fail when source boundaries are ambiguous.
- Demonstration allows real-time visualization of routing and verification.
- Published on arXiv with ID 2604.20860.
- The work addresses challenges in applying RAG over multiple data sources.
Entities
Institutions
- arXiv