Estimate the residual variance.

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.

Usage

estimateResidualVariance(x, task, data, target)

Arguments

x

(Learner or WrappedModel)
Learner or wrapped model.

task

(RegrTask)
Regression task. If missing, data and target must be supplied.

data

(data.frame)
A data frame containing the features and target variable. If missing, task must be supplied.

target

(character(1))
Name of the target variable. If missing, task must be supplied.