Semantic Layer for AI: Prompt Rules vs Governed Metrics in Databricks
PRACTICAL AI EXPERIMENT A semantic layer AI setup improved Databricks Genie’s performance on the same 14 business questions from 79% with prompt-based rules to 93% with governed metrics. My manual review found all 14 final answers business-correct. More importantly, the semantic layer fixed a return-rate calculation that had previously produced 56.89% instead of the verified
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