The principle

  • Each evaluation dataset needs a set of evaluators that matches its purpose 4:18

Example 1 — "happy path" dataset (questions + reference answers)

  • Compare new outputs to ground truth with: semantic similarity, exact matches, or LLM-as-a-judge 4:18
  • Add simpler checks: the link is present where needed, the response isn't too long 4:34

Example 2 — edge cases (e.g. questions about competitors, expecting a polite decline)

  • Evaluate with an LLM judge 4:34
  • Or semantic similarity against a polite-denial template 4:34
  • Or a simple regular expression when a specific canned response is expected 4:34

Wrap-up

  • The video is an overview of LLM evaluation methods; the next one covers LLM-as-a-judge, one of the most popular approaches 5:00