asreview.models.balance.UndersampleBalance

class asreview.models.balance.UndersampleBalance(ratio=1.0, random_state=None)[source]

Undersampling balance strategy (undersample).

This undersamples the data, leaving out excluded papers so that the included and excluded papers are in some particular ratio (closer to one).

Parameters: ratio (double) – Undersampling ratio of the zero’s. If for example we set a ratio of 0.25, we would sample only a quarter of the zeros and all the ones.

Attributes

`default_param`	Get the default parameters of the model.
`label`
`name`
`param`	Get the (assigned) parameters of the model.

Methods