5 TERMS
Glossary
// updated 26 Sept 2026
Five terms I use in every evaluation report: faithfulness, groundedness, calibration, threshold, ledger. Each is defined once here so it can be cited.
Faithfulness
Faithfulness is whether a claim is supported by the context that was actually retrieved, and not by the model’s prior.
Groundedness
Groundedness is the absence of unsourced assertion. Fluent and unsupported is still a miss.
Calibration
Calibration is whether stated confidence matches observed accuracy, of the model or of the judge.
Threshold
The threshold is the written line: above it, ship; below it, fix or defer. A score without that line is a dashboard.
Ledger
A ledger is the table in my evaluation reports: the dimensions, the scores, the line, and who may move each gate.
// see also
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