objective_function_IRT {exametrika}R Documentation

Log-likelihood function used in the Maximization Step (M-Step).

Description

Log-likelihood function used in the Maximization Step (M-Step).

Usage

objective_function_IRT(lambda, model, qjtrue, qjfalse, quadrature)

Arguments

lambda

item parameter vector

model

2,3,or 4 PL

qjtrue

correct resp pattern

qjfalse

incorrect resp pattern

quadrature

Pattern of a segmented normal distribution.


[Package exametrika version 1.5.1 Index]