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****       CHANGES IN immer PACKAGE VERSIONS        ****
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Item Response Models for Multiple Ratings (immer)
Alexander Robitzsch & Jan Steinfeld

 
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mailto: 
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robitzsch@ipn.uni-mail.de

* For reporting a bug, please provide always a reproducible R script 
  and (if necessary) a corresponding dataset.


URL:
----
For development versions see
https://sites.google.com/site/alexanderrobitzsch/software


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------------------------------------------------------------
VERSIONS immer 1.2  |  2022-04-11  |  Last: immer 1.2-19
------------------------------------------------------------

FIXED * fixed a bug in immer_jml() when a design matrix is 
        provided and there are different number of categories
        per items (thanks to a discussion with Kara Styck)
FIXED * fixed a bug in immer_install() and immer_FACETS()
        We switched to a portable version of DosBox. This
        means that installation is no longer necessary in 
        Windows. The entire batch process in Windows for 
        using facets has been rewritten (thanks to a 
        discussion with Gareth McCray).
FIXED * fixed a bug in immer_FACETS(), the first line was 
        deleted during data preparation. 
        (thanks to Gareth McCray)
NOTE  * link for Dosbox has been updated in immer_install()
NOTE  * included argument 'weights' in immer_jml() for
        handling sampling weights

DATA  * included/modified datasets: ---
EXAMP * included/modified examples: immer_jml (3)

------------------------------------------------------------
VERSIONS immer 1.1  |  2018-12-11  |  Last: immer 1.1-35
------------------------------------------------------------

ADDED * included datasets of mammogram ratings data.immer11 
        (Zhang & Petersen, 2018, Statistics in Medicine) and 
        figure skating ratings data.immer12 (Linacre, 2009)

DATA  * included/modified datasets: data.immer11, data.immer12
EXAMP * included/modified examples: ---

------------------------------------------------------------
VERSIONS immer 1.0  |  2018-04-24  |  Last: immer 1.0-138
------------------------------------------------------------

ADDED * included joint maximum likelihood estimation function
        immer_jml() with epsilon-adjustment for bias correction
NOTE  * included argument 'file' in summary() method of
        immer_hrm() and immer_cml()
ADDED * included composite conditional maximum likelihood
        estimation function immer_ccml() for partial credit
        model
ADDED * included function immer_latent_regression() for
        estimating unidimensional latent regression models
NOTE  * added S3 method IRT.likelihood() for immer_jml()
        function
NOTE  * included data processing function immer_proc_data()
NOTE  * renamed functions immer_HRM() and simulate_HRM()
        to immer_hrm() and simulate_hrm()
ADDED * included function immer_create_design_matrix_formula()
        for creating design matrices with an R formula
FIXED * corrected bug in immer_hrm() when est.psi="r" was
        specified
NOTE  * display iteration about remaining computation time
        in immer_hrm()
NOTE  * included argument 'sigma_init' for providing initial
        values for sigma in immer_hrm()
NOTE  * better handling of numerical overflow in immer_hrm()
NOTE  * prevent alphanumeric order of rater labels in output
        of immer_hrm()
ADDED * included Rcpp functions for faster computations in
        immer_cml()
NOTE  * renamed simulate_hrm() into immer_hrm_simulate()

DATA  * included/modified datasets: data.ptam4, data.ptam4long,
        data.ptam4long
EXAMP * included/modified examples: immer_jml (1),
        immer_ccml (1), immer_latent_regression (1),
        immer_proc_data (1)

------------------------------------------------------------
VERSIONS immer 0.8  |  2017-04-27  |  Last: immer 0.8-5
------------------------------------------------------------

ADDED * included registration of native routines and disabling
        symbol search according to CRAN policies

DATA  * included/modified datasets: data.ptam1, data.ptam2, 
        data.ptam3
EXAMP * included/modified examples: ---

----------------------------------------------------------
Changes in Version 0.7   (2017-01-18)  --  CRAN 0.7-0
----------------------------------------------------------

NOTE  * changed internal structure of Rcpp functions

DATA  * included/modified datasets: ---
EXAMP * included/modified examples: ---

----------------------------------------------------------
Changes in Version 0.6   (2016-10-28)  --  CRAN 0.6-0
----------------------------------------------------------

FIXED * fixed a bug when saving sampled values
        (thanks to Giang Pham)
FIXED * fixed a bug in relabeling rater identifiers
        (thanks to Giang Pham)

DATA  * included/modified datasets: ---
EXAMP * included/modified examples: ---


----------------------------------------------------------
Changes in Version 0.5   (2016-05-31)  --  CRAN 0.5-0
----------------------------------------------------------

NOTE  * include reviewer rating dataset 'data.immer09'
        (Kuhlisch et al., 2016) and standard setting ratings
        in 'data.immer10'

DATA  * included/modified datasets: data.immer09, data.immer10
EXAMP * included/modified examples: ---

----------------------------------------------------------
Changes in Version 0.4   (2016-03-07)  --  CRAN 0.4-0
----------------------------------------------------------

NOTE  * added utility functions 'probs2logits' and 
        'logits2probs' for conversions of probabilities 
        and logits of probabilities
ADDED * included a latent class for agreement of two
        raters 'lc2_agreement'
ADDED * added utility function 'immer_unique_patterns' for
        extraction of unique item response patterns
ADDED * added descriptive function 'immer_agree2' for
        agreement among two raters (including Aicken's Alpha
        and Gwet's AC1)

DATA  * included/modified datasets: data.immer08
EXAMP * included/modified examples: probs2logits (1),
        lc2_agreement (1), immer_unique_patterns (1),
        immer_agree2 (1)

----------------------------------------------------------
Changes in Version 0.3   (2016-01-22)  --  CRAN 0.3-0
----------------------------------------------------------

ADDED * proposal distribution in Metropolis-Hastings steps
        are now only updated during the burn-in phase

DATA  * included/modified datasets: ---
EXAMP * included/modified examples: ---

----------------------------------------------------------
Changes in Version 0.2   (2015-11-04)  --  CRAN 0.2-0
----------------------------------------------------------

ADDED * extended 'immer_reshape_wideformat' for reshaping
        of data frame with ratings

DATA  * included/modified datasets: data.immer07
EXAMP * included/modified examples: immer_reshape_wideformat (2),
        immer_cml (4,5)

----------------------------------------------------------
Changes in Version 0.1   (2015-09-13)  --  CRAN 0.1-1
----------------------------------------------------------

ADDED * included functions 'immer_HRM' and 'simulate_HRM'
        for estimating and simulating the hierarchical
        rater model (Patz et al., 2002)
ADDED * included utility function 'immer_reshape_wideformat'
        for converting a rating dataset into a wideformat 
ADDED * included 'immer_opcat' for estimating integer
        item discriminations
ADDED * included linear logistic partial credit model in
        estimated by conditional maximum likelihood in
        'immer_cml'. This functions uses the
        'psychotools::elementary_symmetric_function' function.        
ADDED * included installation function 'immer_install'
        for installing the facets program
ADDED * included wrapper function 'immer_FACETS' to the
        FACETS program

DATA  * included/modified datasets: 
        data.immer01a, ..., data.immer06
EXAMP * included/modified examples: immer_HRM (1,2),
        immer_reshape_wideformat (1), immer_opcat (1),
        immer_cml (1,2,3), immer_FACETS (1), immer_install (1)
