fun.opt: Objective function
In sicure: Single-Index Mixture Cure Models

fun.opt

R Documentation

Objective function

This function computes the negative log-likelihood for a given set of parameters.

fun.opt(theta_h, x_cov, time, delta)

`theta_h`	A numeric vector containing the initial iterant for the vector of parameters and the initial bandwidths.
`x_cov`	A matrix or data frame giving the covariate values. Each row represents an individual and each column corresponds to a variable.
`time`	A numeric vector giving the observed times.
`delta`	A numeric vector giving the values of the uncensoring indicator, where 1 indicates that the event of interest has been observed and 0 indicates that the observation is censored.