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]