func_V {multipleDL}

Calculate the covariance matrix

Description

This functions calculates the covariance matrix based on the point estimates

Usage

func_V(coef, n, x, y, delta, k, p, fam)

Arguments

coef

coefficients (alpha, beta)

n

number of subjects

x

original covariate matrix

y

ranks of code values

delta

censoring indicators

k

the number of unique code values

p

the number of covariates

fam

a list of functions subject to the link function

Value

A covariance matrix of coefficients