dials: xgboost_parameters – R documentation

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xgboost_parameters

Parameters for possible engine parameters for xgboost

Description

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

Usage

scale_pos_weight(range = c(0.8, 1.2), trans = NULL)

penalty_L2(range = c(-10, 1), trans = log10_trans())

penalty_L1(range = c(-10, 1), trans = log10_trans())

Arguments

`range`	A two-element vector holding the defaults for the smallest and largest possible values, respectively.
`trans`	A `trans` object from the `scales` package, such as `scales::log10_trans()` or `scales::reciprocal_trans()`. If not provided, the default is used which matches the units used in `range`. If no transformation, `NULL`.

Details

For more information, see the xgboost webpage.

Examples

scale_pos_weight()
penalty_L2()
penalty_L1()

dials

Tools for Creating Tuning Parameter Values

v0.0.10

MIT + file LICENSE

Authors

Max Kuhn [aut], Hannah Frick [aut, cre], RStudio [cph]

Initial release