# cox_obj_function: Elastic net objective function value for Cox regression model

## Description

Returns the elastic net objective function value for Cox regression model.

## Usage

cox_obj_function(y, pred, weights, lambda, alpha, coefficients, vp)

## Arguments

y

Survival response variable, must be a `Surv`

or
`stratifySurv`

object.

pred

Model's predictions for `y`

.

lambda

A single value for the `lambda`

hyperparameter.

alpha

The elasticnet mixing parameter, with \(0 \le \alpha \le 1\).

coefficients

The model's coefficients.

vp

Penalty factors for each of the coefficients.