Model R-squared Metric

Returns the R-squared (coefficient of determination) of the surrogate's predictions on test data.

Usage

metric_model_r2(archive, surrogate = NULL, test_data, target, ...)

Arguments

archive

(bbotk::ArchiveBatch)
The archive (ignored for this metric).

surrogate

(mlr3mbo::Surrogate)
The fitted surrogate model.

test_data

(data.table)
Test data with features and target column.

target

(character(1))
Target column name in test_data.

...

Ignored.

Value

numeric(1) The R-squared value.