convert_model {irt}R Documentation

Convert model parameters from one model to another

Description

This is especially handy for converting IRT models with less parameters (such as 1 parameter logistic model) to higher dimensional models such as three parameter logistic model.

Usage

convert_model(ip, target_model = "3PL")

## S4 method for signature 'Item'
convert_model(ip, target_model = "3PL")

## S4 method for signature 'Itempool'
convert_model(ip, target_model = "3PL")

## S4 method for signature 'Testlet'
convert_model(ip, target_model = "3PL")

Arguments

ip

An Item-class or Itempool-class object

target_model

The target model that the conversion will be made.

Value

An 'Item' object with new model parameters will be returned.

Author(s)

Emre Gonulates


[Package irt version 0.2.9 Index]