Expansion candidates can come from thesauri, relevance feedback, embeddings, or a language model. The retriever searches the original and added expressions, but poorly chosen additions can introduce irrelevant results.
Query expansion adds related terms or concepts to a search request to improve recall.
Expansion candidates can come from thesauri, relevance feedback, embeddings, or a language model. The retriever searches the original and added expressions, but poorly chosen additions can introduce irrelevant results.