learn_rate: Learning rate
Description
The parameter is used in boosting methods (parsnip::boost_tree()
) or some
types of neural network optimization methods.
Usage
learn_rate(range = c(-10, -1), trans = transform_log10())
Arguments
- range
A two-element vector holding the defaults for the smallest and
largest possible values, respectively. If a transformation is specified,
these values should be in the transformed units.
- trans
A trans
object from the scales
package, such as
scales::transform_log10()
or scales::transform_reciprocal()
. If not provided,
the default is used which matches the units used in range
. If no
transformation, NULL
.
Details
The parameter is used on the log10 scale. The units for the range
function
are on this scale.
learn_rate()
corresponds to eta
in xgboost.