ihgcov {CUB}

Main function for IHG models with covariates

Description

Estimate and validate an IHG model for given ordinal responses, with covariates to explain the preference parameter.

Usage

ihgcov(m, ordinal, U)

Arguments

m

Number of ordinal categories

ordinal

Vector of ordinal responses

U

Matrix of selected covariates for the preference parameter

Details

The optimization procedure is run via "optim", option method="Brent" for constrained optimization (lower bound = 0, upper bound=1).

Value

An object of the class "IHG"

An object of the class "IHG"