regularization_factor: Parameters for possible engine parameters for ranger

Description

These parameters are auxiliary to random forest models that use the "ranger" engine. They correspond to tuning parameters that would be specified using set_engine("ranger", ...).

Usage

regularization_factor(range = c(0, 1), trans = NULL)
regularize_depth(values = c(TRUE, FALSE))
significance_threshold(range = c(-10, 0), trans = transform_log10())
lower_quantile(range = c(0, 1), trans = NULL)
splitting_rule(values = ranger_split_rules)
ranger_class_rules
ranger_reg_rules
ranger_split_rules
num_random_splits(range = c(1L, 15L), trans = NULL)

Format

An object of class character of length 3.

An object of class character of length 4.

An object of class character of length 7.

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.
values: For splitting_rule(), a character string of possible values. See ranger_split_rules, ranger_class_rules, and ranger_reg_rules for appropriate values. For regularize_depth(), either TRUE or FALSE.

Details

To use these, check ?ranger::ranger to see how they are used. Some are conditional on others. For example, significance_threshold(), num_random_splits(), and others are only used when splitting_rule = "extratrees".

Examples

Run this code

regularization_factor()
regularize_depth()

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