Decrease the observations in a task
or a ResampleInstance
to a given percentage of observations.
downsample(obj, perc = 1, stratify = FALSE)
(Task | ResampleInstance)
Input data or a ResampleInstance
.
(numeric(1)
)
Percentage from (0, 1).
Default is 1.
(logical(1)
)
Only for classification:
Should the downsampled data be stratified according to the target classes?
Default is FALSE
.
([data.frame| [Task] | [ResampleInstance]). Same type as
obj`.
Other downsample:
makeDownsampleWrapper()