Auxiliary function for the log-likelihood estimation of CUSH models with covariates

Description

Compute the opposite of the loglikelihood function for CUSH models with covariates to explain the shelter effect.

Usage

1
effecush(paravec, esternocush, shelter, m)

Arguments

paravec

Vector of the initial parameters estimates

esternocush

Matrix binding together the vector of ordinal data and the matrix XX of explanatory variables whose first column is a column of ones needed to consider an intercept term

shelter

Category corresponding to the shelter choice

m

Number of ordinal categories

Details

It is called as an argument for "optim" within CUSH function (when no covariate is included) as the function to minimize.

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