ridge: ridge regression function

In carolineying/bis557: BIS 557 Assignment

ridge regression function

Description

This is a function taking a formula, a dataframe and an optional list of contrast for factor variables, and taking into account colinear (or nearly colinear) regression variables and returning coefficients.

Usage

ridge(formula, df, contrasts = NULL, lambda = 0)

Arguments

formula	an object of class "formula": describing the model to be fitted.
df	a dataframe that containing all the variables in the model.
contrasts	an optional list of contrasts for factor variables.
lambda	an optional penalty term for ridge regression, default is 0

Examples

data(iris)
form <- Sepal.Length ~ Sepal.Width
ridge(formula = form,df = iris)

carolineying/bis557 documentation built on April 17, 2023, 4 a.m.