SCM

Forum: eRm 0.9-2 on CRAN

Posted by: Patrick Mair
Date: 2007-08-21 15:36
Summary:eRm 0.9-2 on CRAN
Project:eRm - extended Rasch modeling

A new eRm version is available on R-forge and on CRAN. Improvements:
- standard errors for beta-parameters
- improved itemfit/personfit statistics
- new sum0 parameterization for RSM
- warning for full-1 NA
- threshold parameters for polytomous models
- Function for information criteria (AIC, BIC, cAIC) based now on joint likelihood
- logLik methods for conditional and joint likelihood
- labeling improved for all models
- confint method added for eRm and ppar
- improved summary methods
- Waldtest returns beta-parameters and corresponding standard errors for each subgroup
- Sanity checks in Waldtest and LRtest improved: Better application for polytomous models.
- ICC plots improved

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