[source] # Informedness Informedness a multiclass generalization of Youden's J Statistic and can be interpreted as the probability that an estimator will make an informed prediction. Its value ranges from -1 through 1 and has a value of 0 when the test yields no useful information. $$ {\displaystyle Informedness = {\frac {\text{TP}}{{\text{TP}}+{\text{FN}}}}+{\frac {\text{TP}}{{\text{TN}}+{\text{FP}}}}-1} $$ **Estimator Compatibility:** Classifier, Anomaly Detector **Score Range:** -1 to 1 ## Parameters This metric does not have any parameters. ## Example ```php use Rubix\ML\CrossValidation\Metrics\Informedness; $metric = new Informedness(); ``` ## References [^1]: W. J. Youden. (1950). Index for Rating Diagnostic Tests.