GpcmMEM: MEM Estimation for the GPCM

In qpcg/MEM: Multiple-Cycle Expectation-Maximization Calibration and Linking of IRT models

Description

This function will allow you to calibrate and link IRT models for the GPCM.

Usage

GpcmMEM(data, anchor, anchor.param = NULL, constraint = c("gpcm", "1PL",
  "rasch"), hess = F, IRT.param = TRUE, start.val = NULL,
  na.action = NULL, trace = T, control = list())

Arguments

data	A matrix of response
anchor	A vector indicating which items are anchor items
anchor.param	The previous item estimates for the ancor items
constraint	c("gpcm","1PL","rasch")
hess	A logical indicating whether or not to calculate and return the hessian (for standard errors)
IRT.param	Logical indicating whether to use IRT parameterization
trace	Interger specifcying progress of optimization routine

qpcg/MEM documentation built on May 26, 2019, 12:34 p.m.