xxIRT (version 2.0.0)

estimate.people.3pl.check.input: Helper Functions for Parameter Estimation

Description

estimate.people.3pl.check.input is a helper function for validating inputs

quadrature is a helper fucntion for getting hermite gauss quadrature points

estimate.items.3pl.check.input is a helper function for validating inputs

estimate.items.3pl.init.par is a helper function for initiating item parameters

Usage

estimate.people.3pl.check.input(responses, items)
quadrature()
estimate.items.3pl.check.input(responses, people)
estimate.items.3pl.init.par(fix, init, n.items)

Arguments

responses

the responses data

items

the item parameters

people

the people parameters

fix

the fixed values of parameters

init

the initial values of parameters

n.items

the number of items

Value

a list of validated responses and itemsa list of validated responses and peoplea list of three initial parameters and three boolean vectors (whether fixed or not)

Details

qudrature was originally intended to call gaussquad::hermite.h.quadrature.rules(12)[[12]]