[R] Latent models

[ronggui]

Is "ltm" what you want?
> packageDescription("ltm")
Package: ltm
Title: Latent Trait Models under IRT
Version: 0.6-1
Date: 2006-10-02
Author: Dimitris Rizopoulos <dimitris.rizopoulos at med.kuleuven.be>
Maintainer: Dimitris Rizopoulos <dimitris.rizopoulos at med.kuleuven.be>
Description: Analysis of multivariate dichotomous and polytomous data
        using latent trait models under the Item Response Theory
        approach. It includes the Rasch, the Two-Parameter Logistic,
        the Birnbaum's Three-Parameter, and the Graded Response Models.
Depends: R(>= 2.3.0), MASS, gtools, msm
LazyLoad: yes
LazyData: yes
License: GPL version 2 or later
URL: http://wiki.r-project.org/rwiki/doku.php?id=packages:cran:ltm
Packaged: Tue Oct 3 09:07:38 2006; dimitris
Built: R 2.4.0; ; 2006-10-03 17:16:04; windows


If you are looking function for "Latent Class Analysis (LCA)", then
"lca" in package e1071 is what you want.


On 11/22/06, Bi-Info (http://members.home.nl/bi-info) <bi-info at home.nl> wrote:
> Hai,
>
> Can anyone help me with some literature (R related) about latent models?
>
> Thanx,
>
> Wilfred
>
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>


-- 
Ronggui Huang
Department of Sociology
Fudan University, Shanghai, China
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