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Don't classify. Hallucinate!

Simon Willison's Weblog

Aug 14, 2026

8/14/2026

Structural Taxonomy Formats Improve Classification Candidates For Embedding-Based Matching

Don't classify. Hallucinate! · Simon Willison's Weblog

Science, Technology & Innovation · Aug 14, 2026

Showing an LLM examples of a taxonomy’s hierarchical format can improve its generation of useful classification candidates for later embedding-based matching, without supplying the full controlled vocabulary.


8/14/2026

Two-Stage Tagging Approach Uses LLM To Generate Semantic Tag Candidates And Embedding-Based Mapping To Existing Tags

Don't classify. Hallucinate! · Simon Willison's Weblog

Science, Technology & Innovation · Aug 14, 2026

A two-stage tagging workflow uses an LLM to generate candidate concepts and embeddings to map them to the closest existing tags, enabling consistent classification without putting a large taxonomy into the prompt.