Evaluation
Exact Match
EM
Evaluation· Intermediate
Definition
An evaluation metric that measures the percentage of predictions that exactly match the ground truth string — no partial credit. Simple and unambiguous for structured output tasks but overly strict for natural language outputs where paraphrases are equally correct.
Enterprise Context
Standard for evaluating structured output tasks: SQL generation, code completion, information extraction, and question answering where the answer is a specific fact or value.
Tags
#metrics#evaluation#structured-output
MS
Maxx Stacks Editorial
Reviewed by enterprise AI practitioners
Maxx University
Keep learning. Keep building.
250+ terms. 5 learning paths. AI maturity assessment. Jargon translator. All free, always.