Hybrid search
Combining lexical retrieval (BM25) with vector retrieval, so exact matches and semantic matches are both found.
By Lattice editorial · Entry last reviewed · method
What it implies
Pure vector search misses the specific tokens users type; pure lexical misses paraphrase. Unioning the candidates and then reranking gets both. Most vector databases support this as a single query, and managed ones often behind a flag. If yours does not, that alone justifies a migration.