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I described 1,245 tables with an LLM and retrieval got worse

The cataloguing step is supposed to be the easy win. You have a schema whose tables are called ecm_template_link and v_pmpm , your users ask questions in English, and the gap between those two…

  • LLM generated 1,245 table descriptions for retrieval improvement
  • Recall dropped significantly, contacts table fell below rank 40
  • IDF collapse and length normalization complicate table retrieval

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