# Query Routing) https://github.com/aurelio-labs/semantic-router See also [Exploring the Benefits of Routing over Multiple Expert Embedding Models](https://arxiv.org/pdf/2409.02685): ![[Pasted image 20240909140046.png]] > In this paper, we present ROUTERRETRIEVER, a retrieval model that integrates multiple domain-specific experts with a routing mechanism to extract the most suitable embedding for each query. This approach is both lightweight and flexible, allowing for the addition or removal of experts without additional training. Our experiments demonstrate that it consistently outperforms single embedding models, showcasing the advantages of integrating domain-specific experts. Additionally, it surpasses various widely used routing techniques in language modeling, emphasizing the significance of effective routing for information retrieval tasks. These results highlight the crucial role of domain-specific experts in improving retrieval performance and suggest that combining them with efficient routing techniques can significantly enhance results, potentially approaching oracle performance.