M6 24-inch iMac vs M4 24-inch iMac: Apple's all-in-ones compared

Reranking Models: The Cheapest RAG Quality Upgrade

Last year I took over a support chatbot for a client with about 40,000 help center and internal wiki chunks in a vector database. Retrieval was pure dense vector search.

• Reranking improves RAG accuracy from 61% to 84% for $40/month
• Bi-encoders excel at recall, not precision, causing wrong chunk ranking
• Hybrid retrieval with BM25 and dense vectors handles exact string matches better

3h ago ·dev.to

dbt tests that actually catch bad data

Most dbt test suites I've inherited check not_null and unique and not much else. Those catch schema problems, not business problems.

3h ago ·dev.to