Finding relevant articles across vast syndication repositories requires hybrid search engines that combine exact keyword matching with deep semantic understanding.
1. Hybrid Search Architecture
- BM25 Lexical Indexing: Handling exact title matches, proper nouns, and technical acronyms with high precision.
- Dense Vector Embeddings: Generating 1536-dimensional embeddings (text-embedding-3-small) to capture conceptual topics and synonyms.
- Reciprocal Rank Fusion (RRF): Merging lexical and semantic result sets using RRF scoring formulas to produce optimal relevant results.