rpf.mean.info1

Factor out logic
and math common to Item Factor Analysis fitting, diagnostics, and
analysis. It is envisioned as core support code suitable for more
specialized IRT packages to build upon. Complete access to optimized C
functions are made available with R_RegisterCCallable().
This software is described in Pritikin & Falk (2020) <doi:10.1177/0146621620929431>.

Joshua Pritikin

Response Probability Functions

Jonathan Weeks

Li Cai

Carrie Houts

Phil Chalmers

rpf.mean.info1 function

<dl><dt>spec</dt>
<dd>an item spec</dd>
<dt>iparam</dt>
<dd>an item parameter vector</dd>
<dt>grain</dt>
<dd>the step size for numerical integration (optional)</dd></dl>

Arguments

Find the point where an item provides mean maximum information — rpf.mean.info1

<dl>

<dt>spec</dt>
<dd>an item spec</dd>


<dt>iparam</dt>
<dd>an item parameter vector</dd>


<dt>grain</dt>
<dd>the step size for numerical integration (optional)</dd>

</dl>

rpf.mean.info1: Find the point where an item provides mean maximum information

Description

Usage

Arguments