Approximate covariance matrix for jmleIRT objects — vcov.jmleIRT • jmleIRT

Uses diagonal JMLE-based standard errors and returns a block-diagonal covariance matrix (person block and item block).

Usage

# S3 method for class 'jmleIRT'
vcov(object, ...)

Arguments

object: An object of class "jmleIRT".
...: Currently unused.

Value

A covariance matrix with row/column names.