Weighted rate
A rate computed from total numerators and denominators or equivalent denominator weights.
Existing companion · depth review pendingOpen collection →Read deeply.
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Percentage point
An absolute difference between two percentage values.
Existing companion · depth review pendingOpen collection →Attribution
A rule assigning an observed conversion to a channel or interaction.
Existing companion · depth review pendingOpen collection →Causality
A claim that changing one factor changes an outcome, requiring a suitable design and assumptions.
Existing companion · depth review pendingOpen collection →Holdout
Data reserved from model fitting and selection for a later evaluation.
Existing companion · depth review pendingOpen collection →Overfitting
Adapting too closely to training noise or reused evaluation feedback.
Existing companion · depth review pendingOpen collection →Precision
Among predicted positives, the fraction that are true positives; undefined if none are predicted positive.
Existing companion · depth review pendingOpen collection →Recall
Among actual positives, the fraction correctly predicted positive; undefined when no actual positives exist.
Existing companion · depth review pendingOpen collection →Drift
A change in data or relationships relative to a reference; its operational meaning needs investigation.
Existing companion · depth review pendingOpen collection →Idempotency
Rerunning an operation with the same inputs does not create unintended additional effects.
Existing companion · depth review pendingOpen collection →Provenance
A record of sources and transformations that explains where an output came from.
Existing companion · depth review pendingOpen collection →File hash
A digest identifying exact file bytes; it does not establish truth or permission.
Existing companion · depth review pendingOpen collection →One useful next step
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