get_EM: function to actually perform EM for DINA (fixed A)

In zhenkewu/slamR: Structured Latent Attribute Models in R

Description

This is primarily for plugging in final A (e.g., from PEM) and redo EM to calculate log lik for EBIC calculations. Response probabilities estimated within the algorithm with A and Q fixed.

Usage

get_EM(X, Q, A, err_prob, c = NULL, g = NULL, model = "DINA")

Arguments

X	N by J data matrix
Q	J by K structural matrix
A	K-column latent attribute matrix
err_prob	error probability; for initializing c g
c, g	default to NULL, but can use values obtained from PEM.
model	"DINA" (default) or "DINO"

Value

• nu vector of potential ("Delta")

• c 1-slipping parameter

• g guessing parameter

• loglik log likelihood

zhenkewu/slamR documentation built on March 8, 2020, 1:31 a.m.