// generateTrainingInstances generates RandomFeatures number of
// attributes and returns a modified version of base.Instances
// for training the model
func (b *BaggedModel) generateTrainingInstances(model int, from base.FixedDataGrid) base.FixedDataGrid {
_, rows := from.Size()
insts := base.SampleWithReplacement(from, rows)
selected := b.generateTrainingAttrs(model, from)
return base.NewInstancesViewFromAttrs(insts, selected)
}
// generatePredictionInstances returns a modified version of the
// requested base.Instances with only the base.Attributes selected
// for training the model.
func (b *BaggedModel) generatePredictionInstances(model int, from base.FixedDataGrid) base.FixedDataGrid {
selected := b.selectedAttributes[model]
return base.NewInstancesViewFromAttrs(from, selected)
}