ClassifierMeasurements

ClassifierMeasurements[classifier, testset, prop] gives measurements associated with property prop when classifier is evaluated on testset.

ClassifierMeasurements[classifier, testset] yields a measurement report that can be applied to any property.

Examples

Measure accuracy of a classifier:

cf = Classify[{1 -> "a", 2 -> "b", 3 -> "a"}];
ClassifierMeasurements[cf, {1.5 -> "a", 2.5 -> "b"}, "Accuracy"]
(* 1. *)

Get a confusion matrix:

ClassifierMeasurements[cf, testdata, "ConfusionMatrix"]

Please visit the official Wolfram Language Reference for more details.