Possible engine parameters for catboost

These parameters are auxiliary to tree-based models that use the "catboost" engine. They correspond to tuning parameters that would be specified using set_engine("catboost", ...).

Usage

l2_leaf_reg(range = c(0, 1), trans = transform_log10())

max_leaves(range = c(10, 64), trans = NULL)

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

"catboost" is an available engine in the parsnip extension package bonsai

max_leaves() is only used when the grow policy is set to "Lossguide".

For more information, see the catboost webpage.

Examples

l2_leaf_reg()
#> L2 Regularization Coefficient (quantitative)
#> Transformer: log-10 [1e-100, Inf]
#> Range (transformed scale): [0, 1]
max_leaves()
#> Maximum Number of Leaves (quantitative)
#> Range: [10, 64]