Inject a 'What This Document Does Not Contain' Segment
thisguyknowsai · x · 2026-07-11
This covers Technique 5: Negative Space Injection.
The approach is to add a short summary of 'What this document does not contain' when injecting retrieval context. Its purpose is to reduce the model's tendency to 'hallucinate' information not present in the documents.
The author reports that after testing on 200 medical QA samples, hallucination rate dropped from 19% to 6%.
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