Estimate the residual variance of a regression model on a given task. If a regression learner is provided instead of a model, the model is trained (see train) first.
estimateResidualVariance(x, task, data, target)(Learner or WrappedModel) Learner or wrapped model.
(RegrTask)
Regression task.
If missing, data and target must be supplied.
(data.frame)
A data frame containing the features and target variable.
If missing, task must be supplied.
(character(1))
Name of the target variable.
If missing, task must be supplied.