PRODUCTION SCENARIO
A biotech loads instrument operating procedures for three hardware generations into one OpenAI vector store. Scientists running the Gen-3 instrument keep receiving chunks from the Gen-1 procedure, which reads almost identically but specifies different reagent volumes.
Which change keeps Gen-3 users on the Gen-3 procedure?
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Answer: Attach a generation attribute to each file and filter on it at query time
Each vector store file carries an attributes dictionary that attribute filtering compares at search time, so the Gen-1 file leaves the candidate set before anything is ranked. Returning 50 results admits more near-identical Gen-1 chunks. Shifting the text weight still ranks rather than excludes, and the string 'Gen-3' appears in the Gen-1 file too. Two procedures that read alike are precisely what semantic ranking cannot separate.
Official Source: https://developers.openai.com/api/docs/guides/retrieval ↗