convert_model: Convert model parameters from one model to another

In irt: Item Response Theory and Computerized Adaptive Testing Functions

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

irt documentation built on Nov. 10, 2022, 5:50 p.m.