Skip to content

Glossary · Evaluator mechanisms

Verifier

Strictly, an evaluator with a soundness guarantee relative to a formal specification. In loose usage it often means a deterministic or execution checker.

Defined in

Handbook · FoundationsVocabulary without category errorsReward model, rubric, PRM, RLHF, verifier: put each term on the axis it actually describes and most confusions disappear.
Judge
A learned or prompted evaluator without formal soundness guarantees. People who score are raters, panels, or adjudicators, not judges, in this handbook.

Where it comes up

See it in the full glossary →