Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!
Get Started for Free
Documentation
R
dials

shrinkage_correlation

Parameters for possible engine parameters for sda models

Description

These functions can be used to optimize engine-specific parameters of sda::sda() via discrim::discrim_linear().

Usage

shrinkage_correlation(range = c(0, 1), trans = NULL)

shrinkage_variance(range = c(0, 1), trans = NULL)

shrinkage_frequencies(range = c(0, 1), trans = NULL)

diagonal_covariance(values = c(TRUE, FALSE))

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.
values

A vector of possible values (TRUE or FALSE).

Details

These functions map to sda::sda() arguments via:

  • shrinkage_correlation() to lambda

  • shrinkage_variance() to lambda.var

  • shrinkage_frequencies() to lambda.freqs

  • diagonal_covariance() to diagonal

Value

For the functions, they return a function with classes "param" and either "quant_param" or "qual_param".

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

We don't support your browser anymore

Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.