Retrieve the GINI Coefficcient

Retrieves the GINI coefficient from an H2OBinomialMetrics. If "train", "valid", and "xval" parameters are FALSE (default), then the training GINIvalue is returned. If more than one parameter is set to TRUE, then a named vector of GINIs are returned, where the names are "train", "valid" or "xval".

h2o.giniCoef(object, train = FALSE, valid = FALSE, xval = FALSE)

Arguments

object	an H2OBinomialMetrics object.
train	Retrieve the training GINI Coefficcient
valid	Retrieve the validation GINI Coefficcient
xval	Retrieve the cross-validation GINI Coefficcient

See also

h2o.auc for AUC, h2o.giniCoef for the GINI coefficient, and h2o.metric for the various threshold metrics. See h2o.performance for creating H2OModelMetrics objects.

Examples

if (FALSE) {
library(h2o)
h2o.init()

prostate_path <- system.file("extdata", "prostate.csv", package = "h2o")
prostate <- h2o.uploadFile(prostate_path)

prostate[, 2] <- as.factor(prostate[, 2])
model <- h2o.gbm(x = 3:9, y = 2, training_frame = prostate, distribution = "bernoulli")
perf <- h2o.performance(model, prostate)
h2o.giniCoef(perf)
}