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The AI Brain: SageMaker BGE Cross-Encoder Reranking & Sub-100ms Bedrock ConverseStream SSE (Part 4)
In Part 3 of this series, we built our Storage Vault in PostgreSQL 16: co-locating dense pgvector embeddings and full-text BM25 indexes, using Reciprocal Rank Fusion (RRF) to merge candidate chunks in...