sivs (version 0.2.11)

coef.sivs: Extract Coefficients from sivs object

Description

A function to extract the coefficients of "iterative.res" step or any part of "rfe" such as "sivs_object$rfe$baseline" from a sivs object.

Usage

# S3 method for sivs
coef(object, step = "iterative.res", ...)

Value

The function returns a data.frame that has features as rows and different runs as columns, with the addition of the first column which contains the feature name.

Arguments

object

An object of class "sivs"

step

A a character string of length 1. It should either specify the step ("iterative.res" or "rfe"), or step$subsetp (e.g "rfe$baseline").

...

potential further arguments (required for Method/Generic reasons).

Examples

if (FALSE) {
# getting the coefficients of features for the baseline runs in rfe
coef(object = sivs_object, step = "rfe$baseline")
}

## WORKING EXAMPLE
## Note that this example does not logically make sense as iris data has only
## 4 columns and there is no need for SIVS to take care of feature selection
## therefore this example is only here for testing purposes.

tmp <- subset(x = iris, subset = Species != "setosa")

tmp <- varhandle::unfactor(tmp)

sivs_obj <- sivs(x = tmp[, c("Sepal.Length", "Sepal.Width",
                             "Petal.Length", "Petal.Width")],
                 y = factor(tmp$Species),
                 family = "binomial",
                 verbose = "detailed",
                 progressbar = FALSE,
                 nfolds = 3,
                 parallel.cores = FALSE,
                 iter.count = 20)

coef(sivs_obj)