Dense vectors are magical at capturing semantics, but they fail when you need exact matches. This article unpacks the Vocabulary Mismatch Problem and introduces SPLADE—a neural approach that combines the precision of keyword search with the intelligence of transformers. Learn why sparse embeddings matter and how to architect hybrid search for production.
Building production RAG systems is fundamentally an ETL (Extract, Transform, Load) challenge. We explore why documents must be treated as hierarchical data structures, not string soup. Discover structure-aware splitting, metadata injection, and multi-resolution indexing strategies that transform data quality and eliminate hallucinations.
Everyone talks about the Neural Network, but the Tokenizer is the unsung hero of LLMs. This post explains what a Tokenizer actually does, why we use Byte Pair Encoding (BPE), and how these tokens bridge the gap between rigid integers and meaningful vector embeddings in models like GPT-4.