MetricsKey A key that uniquely identifies a metric. Declarationstruct MetricsKey TopicsGetting the propertiessourcetrainingAccuracytrainingErrortrainingLosstrainingMaximumErrortrainingMeanAveragePrecisionvalidationAccuracyvalidationErrorvalidationLossvalidationMaximumErrorvalidationMeanAveragePrecision RelationshipsConforms ToCopyableCustomDebugStringConvertibleEquatableEscapableHashableRawRepresentableSendableSendableMetatype See AlsoEvent handlingEventEventHandler