getItemDiscrimination: Function to create a item discrimination parameter matrix

In lucasmanuelkohler/anchorpoint: Anchor Point Selection Based on the Gini Inequality Criterion

Description

Function to create a item discrimination parameter matrix

Usage

getItemDiscrimination(
  dimensions,
  DIFpercent,
  tlength,
  DIF_mode = c("intersect", "disjoint")
)

Arguments

dimensions	integer specifying the number of dimensions used in dgp (currently only 2 are allowed)
DIFpercent	percentage of DIF items in the test
tlength	interger > 0, test length (number of items)
DIF_mode	character vector specifying the mode how to create the matrix: "intersect": all items load on the first, length*DIFpercent items also on the second "disjoint": ceiling(tlength*DIFpercent) items load on the first, the rest on the second, where ceiling rounds the number up to the next integer

Value

A binary item discrimination parameter matrix of dimension: tlength x dimensions

lucasmanuelkohler/anchorpoint documentation built on April 16, 2021, 6:41 a.m.