Version: 5.4
Category: FIXED * fixed warnings in calculation of standard errors in
Text: 'gdina' and 'gdina.wald' (thanks to Andres Alberto Burga Leon)
Version: 5.4
Category: DATA * included/modified datasets:
Text:
Version: 5.4
Category: EXAMP * included/modified examples:
Text:
Version: 5.3
Category: ADDED * included function CDM::IRT.RMSD which computed
group-wise
Text: item fit. The RMSD item fit statistic was denoted as RMSEA in
previous publications and is internally computed by the
CDM::itemfit.rmsea function in the CDM package.
Version: 5.3
Category: ADDED * included chi square statistic and MAD statistic (mean
Text: absolute deviation) of item fit in CDM::IRT.RMSD
Version: 5.3
Category: NOTE * cleaned code in function 'WaldTest' a bit
Text: (thanks to suggestions of Michael Chirico)
Version: 5.3
Category: NOTE * added links to recently released GDINA package in R.
Text: Included Example 1d for fitting a GDINA model with GDINA::GDINA.
Version: 5.3
Category: DATA * included/modified datasets:
Text:
Version: 5.3
Category: EXAMP * included/modified examples: IRT.RMSD (1), gdina (1d
Text:
Version: 5.2
Category: NOTE * extended 'item_by_group' function which can now handle
Text: partial set of group-specific items
Version: 5.2
Category: ADDED * included option for a subset of invariant items in
Text: multiple group estimation of GDINA model in 'gdina' (requested by
Hamid Bahrami)
Version: 5.2
Category: FIXED * fixed a bug in setting boundaries for guessing and
slipping
Text: parameters in 'din' (thanks to Jill-Jen Vie)
Version: 5.2
Category: NOTE * reference to new Journal of Statistical Software
George et al
Text: article in the CITATION file and the CDM manual
Version: 5.2
Category: DATA * included/modified datasets:
Text:
Version: 5.2
Category: EXAMP * included/modified examples: item_by_group (1),
Text: gdina (5)
Version: 5.1
Category: FIXED * changed the method of standard error calculation in
Text: 'gdina' function. It seems that previous CDM version produced
overestimated standard errors (thanks to Xue-Lan Qiu). The
improved calculation is now the default specified as the
argument 'se_version=1'. The behavior of older CDM versions can
be obtained with 'se_version=0'.
Version: 5.1
Category: DATA * included/modified datasets:
Text:
Version: 5.1
Category: EXAMP * included/modified examples:
Text:
Version: 5.0
Category: NOTE * changed the way of calculating numerical derivatives
in
Text: 'numerical_Hessian'
Version: 5.0
Category: NOTE * included utility function 'abs_approx' for a
differentiable
Text: function approximation (and its derivative 'abs_approx_D1') of
absolute value function
Version: 5.0
Category: NOTE * added argument 'append' in function 'osink
Text:
Version: 5.0
Category: NOTE * included a utility function 'summary_sink' which sinks
Text: summary output of a method into a file
Version: 5.0
Category: NOTE * included utility function 'deltaMethod' for nonlinear
Text: transformations of parameters
Version: 5.0
Category: NOTE * included utility function 'item_by_group' which
extends
Text: a dataset of item responses and a grouping variable to an
extended dataset of group-specific item responses
Version: 5.0
Category: ADDED * added sequential GDINA model for polytomous item
responses
Text: (Ma & de la Torre, 2016, BJMSP) in 'gdina' function.
Version: 5.0
Category: NOTE * included argument 'invariance' in 'gdina' which allows
Text: specification of non-invariant item parameters across multiple
groups (see ?gdina, Example 5)
Version: 5.0
Category: NOTE * changed number of M-steps in 'slca' in default to 10
Text: iterations (msteps=10)
Version: 5.0
Category: DATA * included/modified datasets: data.cdm04
Text:
Version: 5.0
Category: EXAMP * included/modified examples: abs_approx (1),
Text: summary_sink (1), deltaMethod (1), item_by_group (1), gdina
(5,11)
Version: 4.991
Category: NOTE * changed argument structure of 'numerical_hessian
Text:
Version: 4.991
Category: NOTE * included maximum likelihood estimation method for
Text: GDINA models (method='ML') which seems to be more stable when
method='ULS' (or 'WLS') has a bad convergence behavior. Now,
the GDINA function switches to ML estimation if the RRUM model
is used (thanks to a correspondence with Thomas Eckes).
Version: 4.991
Category: NOTE * added an example of fitting (data.cdm, Example 1) the
Text: reduced RUM model in the CDM package (see the recent Chiu et al.,
IJT paper)
Version: 4.991
Category: NOTE * changed default value of 'max.increment' argument in
Text: 'gdina' function to .3
Version: 4.991
Category: FIXED * fixed a bug in 'gdina.dif' (thanks to Sinem Senfarah
Text:
Version: 4.991
Category: DATA * included/modified datasets: data.cdm03
Text:
Version: 4.991
Category: EXAMP * included/modified examples: data.cdm (1
Text:
Version: 4.8
Category: FIXED * fixed a bug in 'itemfit.sx2' for fitted objects in
TAM
Text:
Version: 4.8
Category: NOTE * slightly changed output of 'print' methods
Text:
Version: 4.8
Category: NOTE * changed argument 'rdigits' to 'digits' in 'summary
Text: method if necessary
Version: 4.8
Category: NOTE * included utility functions 'osink' and 'csink' for
Text: writing output of 'summary' into a file
Version: 4.8
Category: NOTE * allowed argument 'file' in 'summary' method for
objects
Text: of class 'gdina', 'gdm', 'mcdina' and 'slca'
Version: 4.8
Category: ADDED * included function 'numerical_Hessian' for a numerical
Text: evaluation of the Hessian matrix
Version: 4.8
Category: DATA * included/modified datasets:
Text:
Version: 4.8
Category: EXAMP * included/modified examples: osink (1
Text: numerical_Hessian (1)
Version: 4.7
Category: NOTE * extended Wald test for item fit 'gdina.wald' for DINO
Text: models. In addition, an effect size of approximation ('uwgtdist'
and 'wgtdist') is included
Version: 4.7
Category: NOTE * cleaned namespace file and defined imported functions
Text: in a more explicit way
Version: 4.7
Category: ADDED * added a S3 method 'IRT.parameterTable
Text:
Version: 4.7
Category: ADDED * added a utility function 'WaldTest' for performing
Text: Wald tests
Version: 4.7
Category: DATA * included/modified datasets:
Text:
Version: 4.7
Category: EXAMP * included/modified examples: gdina.wald (1), data.ecpe
(1
Text:
Version: 4.6
Category: NOTE * included optional lower and upper bounds for
estimation
Text: of guessing and slipping parameters in 'din' (arguments
'guess.min', 'guess.max', 'slip.min', 'slip.max') (requested by
Kevin Carl Santos)
Version: 4.6
Category: DATA * included/modified datasets:
Text:
Version: 4.6
Category: EXAMP * included/modified examples:
Text:
Version: 4.5
Category: NOTE * extended 'din' and 'gdina' functions for items with
more
Text: than five measured attributes per item (requested by Alvaro
Artavia Medrano)
Version: 4.5
Category: NOTE * included 'converged' value for all models indicating
Text: whether maximum number of iterations was reached (suggested by an
anonymous reviewer)
Version: 4.5
Category: DATA * included/modified datasets:
Text:
Version: 4.5
Category: EXAMP * included/modified examples:
Text:
Version: 4.4
Category: FIXED * fixed a bug in function 'sequential.items
Text:
Version: 4.4
Category: DATA * included/modified datasets:
Text:
Version: 4.4
Category: EXAMP * included/modified examples:
Text:
Version: 4.3
Category: NOTE * included t and p values in 'IRT.jackknife.gdina
Text:
Version: 4.3
Category: FIXED * fixed bugs in 'summary.gdina' and 'gdina' due to
Text: computational problems in standard error calculation
Version: 4.3
Category: DATA * included/modified datasets:
Text:
Version: 4.3
Category: EXAMP * included/modified examples:
Text:
Version: 4.2
Category: FIXED * fixed the ignorance of the 'centered.latent' argument
Text: in the 'gdm' function
Version: 4.2
Category: ADDED * included S3 methods 'IRT.expectedCounts' for
extracting
Text: expected counts and 'IRT.data' for extracting the used item
response dataset
Version: 4.2
Category: ADDED * included general plotting function for item response
Text: functions 'IRT.irfprobPlot'. This function can be used with both
lattice and graphics packages.
Version: 4.2
Category: ADDED * included S3 method 'predict' (and function
'IRT.predict
Text: for computing expected values and residuals for fitted models in
CDM
Version: 4.2
Category: NOTE * added attributes group and weights to 'IRT.data' value
Text:
Version: 4.2
Category: NOTE * added a summary method for 'IRT.compareModels
Text:
Version: 4.2
Category: NOTE * changed output of posterior in 'gdina
Text:
Version: 4.2
Category: ADDED * included function 'IRT.repDesign' for constructing
Text: replicate designs
Version: 4.2
Category: ADDED * added arguments for fixing and initial parameters in
Text: 'gdina' function
Version: 4.2
Category: NOTE * added parameter table and matrix of polychoric
correlations
Text: among skills in 'gdina' output
Version: 4.2
Category: ADDED * added S3 method 'IRT.jackknife' and an initial
version
Text: for models of class 'gdina'
Version: 4.2
Category: ADDED * added function 'IRT.derivedParameter' for replication
methods
Text: for derived parameters based on objects of class 'IRT.jackknife'
Version: 4.2
Category: DATA * included/modified datasets: data.timss11.G4.AUT
Text: data.timss11.G4.AUT.part
Version: 4.2
Category: EXAMP * included/modified examples: IRT.expectedCounts (1,2
Text: IRT.irfprobPlot (1,2), predict (1,2), IRT.data (1), IRT.repDesign
(1,2), gdina (1), IRT.jackknife (1,2)
Version: 4.1
Date: 2014-12-17
Category: NOTE * included confidence intervals S3 method for din
objects
Text:
Version: 4.1
Date: 2014-12-17
Category: FIXED * fixed a bug in printing BIC for 'gdina' objects
Text:
Version: 4.1
Date: 2014-12-17
Category: NOTE * included S3 method 'IRT.modelfit' for assessment of
Text: absolute model fit
Version: 4.1
Date: 2014-12-17
Category: NOTE * included S3 method 'IRT.se' for computation of
standard
Text: errors
Version: 4.1
Date: 2014-12-17
Category: NOTE * included S3 method 'IRT.IC' for extracting information
Text: criteria and 'IRT.compareModels' for model comparisons
Version: 4.1
Date: 2014-12-17
Category: NOTE * included object names in 'anova' methods for CDM
objects
Text:
Version: 4.1
Date: 2014-12-17
Category: NOTE * included S3 method 'IRT.anova
Text:
Version: 4.1
Date: 2014-12-17
Category: NOTE * removed MX2 statistic from 'modelfit.cor' function
Text:
Version: 4.1
Date: 2014-12-17
Category: DATA * included/modified datasets:
Text:
Version: 4.1
Date: 2014-12-17
Category: EXAMP * included/modified examples: vcov.din (1),
IRT.modelfit (1
Text: IRT.IC (1), IRT.compareModels (1), anova (1,2)
Version: 4.0
Date: 2014-11-22
Category: NOTE * included argument for iteration progress in 'gdm
Text: and 'slca'
Version: 4.0
Date: 2014-11-22
Category: NOTE * included value call in 'din', 'gdina', 'gdm
Text: 'mcdina' and 'slca'
Version: 4.0
Date: 2014-11-22
Category: NOTE * changed print method in 'din' and included print
method
Text: for 'gdina', 'gdm' and 'slca'
Version: 4.0
Date: 2014-11-22
Category: NOTE * added anova and coef method for 'slca' function
Text:
Version: 4.0
Date: 2014-11-22
Category: ADDED * added asymptotic covariance matrix estimation S3
method
Text: 'vcov' for objects of class din
Version: 4.0
Date: 2014-11-22
Category: ADDED * added computation of entropy of whole test and items
in
Text: function 'entropy.lca' (Asparouhov & Muthen, 2014)
Version: 4.0
Date: 2014-11-22
Category: NOTE * included a summary function for 'cdi.kli
Text:
Version: 4.0
Date: 2014-11-22
Category: NOTE * included a function 'skillspace.full' for creating a
Text: skill space for dichotomous skills
Version: 4.0
Date: 2014-11-22
Category: ADDED * included a plot S3 method for 'gdm' and 'slca'
Text:
Version: 4.0
Date: 2014-11-22
Category: NOTE * corrected a bug in person value of 'gdm': missing
standard
Text: errors of EAPs of multiple dimensions are now included
Version: 4.0
Date: 2014-11-22
Category: ADDED * included person fit appropriateness statistic (Liu et
al., 2009
Text:
Version: 4.0
Date: 2014-11-22
Category: ADDED * included S3 methods 'IRT.likelihood', 'IRT.personfit
Text: 'IRT.irfprob' and 'IRT.factor.scores' for objects of classes din,
gdina, gdm, slca and mcdina
Version: 4.0
Date: 2014-11-22
Category: NOTE * included person parameter estimation (classification)
for
Text: 'slca' and 'mcdina' functions
Version: 4.0
Date: 2014-11-22
Category: DATA * included/modified datasets:
Text:
Version: 4.0
Date: 2014-11-22
Category: EXAMP * included/modified examples: data.dcm (1),
modelfit.cor (2
Text: vcov-CDM (1), entropy.lca (1,2,3), personfit.appropriateness
(1,2), slca (1), IRT.likelihood (1), IRT.irfprob (1),
IRT.factor.scores (1)
Version: 3.4
Category: NOTE * speeded itemfit.sx2 a bit
Text:
Version: 3.4
Category: NOTE * included output value 'pattern' in multiple group
GDINA models
Text: (requested by Sung Eun Kim)
Version: 3.4
Category: NOTE * included adjusted mean absolute deviation of Q3
statistics (MADaQ3
Text: in modelfit.cor.din
Version: 3.4
Category: EXAMP * included examples for running CDMs in mirt package
Text: DINA model ('data.dcm', Model 1)
Version: 3.4
Category: EXAMP * included examples for running CDMs in mirt package
Text: additive GDINA model ('data.dcm', Model 6)
Version: 3.4
Category: DATA * included/modified datasets:
Text:
Version: 3.4
Category: EXAMP * included/modified examples: modelfit.cor (1),
din.deterministic
Text: itemfit.sx2 (1), data.dcm (1,6)
Version: 3.3
Category: ADDED * included structured latent class analysis for
polytomous data ('slca
Text:
Version: 3.3
Category: DATA * included/modified datasets:
Text:
Version: 3.3
Category: EXAMP * included/modified examples: slca (1,2,3,4,5
Text:
Version: 3.2
Category: NOTE * included an argument save.devmin in 'gdina' for more
parsimonious
Text: savings of output values to avoid working memory overflow for
large datasets
Version: 3.2
Category: NOTE * included effect size of differential item functioning
in
Text: gdina model (included in 'gdina.dif')
Version: 3.2
Category: FIXED * fixed a bug in itemfit.sx2
Text:
Version: 3.2
Category: DATA * included/modified datasets:
Text:
Version: 3.2
Category: EXAMP * included/modified examples: gdina.dif (1
Text:
Version: 3.1
Category: FIXED * fixed a bug when printing objects of class 'din
Text:
Version: 3.1
Category: NOTE * allowed vector input of item response pattern in
'plot.din
Text:
Version: 3.1
Category: NOTE * disabled argument log.file in 'summary.din
Text:
Version: 3.1
Category: NOTE * included random initial parameter values in 'din' and
'gdina
Text:
Version: 3.1
Category: NOTE * changed some settings in plot.din
Text:
Version: 3.1
Category: DATA * included/modified datasets:
Text:
Version: 3.1
Category: EXAMP * included/modified examples: din (1), gdina (1),
plot.din
Text:
Version: 3.0
Category: NOTE * changed output in summary.gdina a bit (fixed a bug for
Text: the output of skill probabilities)
Version: 3.0
Category: NOTE * included the argument 'avoid.zeroprobs' in gdina
function
Text: to avoid zero probabilities of skill classes and inversion of
singular matrices
Version: 3.0
Category: NOTE * fixed problems in itemfit.sx2 for empty cells (thanks
to
Text: Balal Izanloo)
Version: 3.0
Category: ADDED * included a Wald test for the GDINA model (gdina.wald
Text:
Version: 3.0
Category: ADDED * included assessment of item-wise differential item
functioning
Text: in the GDINA model (gdina.dif)
Version: 3.0
Category: FIXED * removed minor bug in summary.gdina
Text:
Version: 3.0
Category: FIXED * fixed a bug with singular design matrix in skill
space reduction
Text:
Version: 3.0
Category: ADDED * included calculation of polychoric correlation in
summary.gdina
Text: and an additional function skill.polychor
Version: 3.0
Category: NOTE * removed parallel plot form plot.din
Text:
Version: 3.0
Category: FIXED * fixed a crucial bug for in the multidimensional GDMs
with item slope
Text: parameter estimation
Version: 3.0
Category: ADDED * included function 'mcdina' for estimating the
multiple group multiple
Text: choice DINA (MCDINA) model with polytomous attributes
Version: 3.0
Category: DATA * included/modified datasets: data.cdm01, data.cdm02
Text:
Version: 3.0
Category: EXAMP * included/modified examples: data.ecpe, gdina.wald
(1),
Text: gdina.dif (1), din (7), mcdina (1,2,3)
Version: 2.7
Category: ADDED * included cognitive diagnostic indices based on
Kullback-Leibler
Text: information ('cdi.kli')
Version: 2.7
Category: NOTE * changed NAMESPACE and DESCRIPTION files due to a
change in Rcpp
Text:
Version: 2.7
Category: NOTE * included non-exported Rcpp files for calculating
individual
Text: likelihood and posterior distribution for polytomous items and
multiple groups
Version: 2.7
Category: DATA * included/modified datasets:
Text:
Version: 2.7
Category: EXAMP * included/modified examples: cdi.kli (1
Text:
Version: 2.6
Category: FIXED * fixed a bug in polytomous GDINA models with only one
skill
Text:
Version: 2.6
Category: NOTE * included value 'zeroprob.skillclasses' in
skillspace.hierarchy
Text:
Version: 2.6
Category: NOTE * included a more efficient skill space reduction method
in
Text: gdina: using the argument 'reduced.skillspace.method', the new
implemented method is now the default
Version: 2.6
Category: ADDED * included data transformation function
'sequential.items' for
Text: constructing dichtomous pseudo items from polytomous items for
estimation sequential item response models
Version: 2.6
Category: DATA * included/modified datasets: data.sda6,
data.timss03.G8.su
Text: data.timss07.G4.lee
Version: 2.6
Category: EXAMP * included/modified examples: gdm (10
Text:
Version: 2.5
Category: FIXED * fixed a bug when inverting a singular matrix in
standard error
Text: calculation in gdina function (thanks to Hsin-Hao Chen)
Version: 2.5
Category: NOTE * included conditional item probabilities in gdina
output
Text:
Version: 2.5
Category: NOTE * included gdina plot function (thanks to a discussion
with
Text: Hamdollah Ravand)
Version: 2.5
Category: FIXED * fixed a bug in summary.dina if data without column
names
Text: is provided (thanks to Hu Jinxiang)
Version: 2.5
Category: FIXED * removed a bug in gdina function which occured
sometimes
Text: due to division by zero (thanks to Hu Jinxiang)
Version: 2.5
Category: FIXED * fixed a bug in cdm.est.class.accuracy for GDINA
models
Text: (thanks to Hamdollah Ravand)
Version: 2.5
Category: FIXED * fixed some instable numerical behavior for higher
order
Text: GDINA models (thanks to Ed Merkle)
Version: 2.5
Category: FIXED * fixed a bug in calculating number of estimated
parameters for
Text: 'din' function in case of skill classes with zero probability
(thanks to Juergen Gross)
Version: 2.5
Category: NOTE * added some explanations in the manual of 'modelfit.cor
Text:
Version: 2.5
Category: ADDED * included S-X2 item fit statistic ('itemfit.sx2')
accompanied
Text: with a summary and a plot method
Version: 2.5
Category: ADDED * included marginal skill classification reliability in
Text: 'cdm.est.class.accuracy' function
Version: 2.5
Category: ADDED * implemented significance tests in modelfit.cor and
modelfit.cor.din
Text:
Version: 2.5
Category: ADDED * included jackknife estimation of standard
Text: errors and bias corrected estimators in modelfit.cor.din
Version: 2.5
Category: NOTE * speeded function 'modelfit.cor' by moving some parts
of the code
Text: to Rcpp
Version: 2.5
Category: NOTE * included warnings in case of nonconvergence in gdina
function
Text: (thanks to a dataset provided by Hamdollah Ravand)
Version: 2.5
Category: NOTE * slight change of algorithm for skill space reduction
which
Text: seems to improve convergence behavior
Version: 2.5
Category: ADDED * included a function for skill space approximation
Text:
Version: 2.5
Category: ADDED * included a function for calculation reduced skill
spaces
Text: if hierarchies among skills exist ('skillspace.hierarchy')
Version: 2.5
Category: ADDED * included generalized distance discriminating method
and a function
Text: for computing ideal response patterns
Version: 2.5
Category: DATA * included/modified datasets: data.hr, data.melab,
data.jang,
Text: data.dtmr
Version: 2.5
Category: EXAMP * included/modified examples: gdm (4,5,6), gdina (8,9),
sim.din (3),
Text: sim.gdina (2,3), itemfit.sx2 (1,2), din(6)
Version: 2.4
Category: DATA * included two datasets 'data.dcm' and 'data.ecpe
Text:
Version: 2.4
Category: DATA * eliminated a recoding error in data.Students
Text:
Version: 2.3
Category: NOTE * worked on slight improvements of computation time in
din
Text: and gdina
Version: 2.3
Category: DATA * included multiple group dataset 'data.mg
Text:
Version: 2.3
Category: NOTE * cleaned CDM manual (thanks to Michaela Mayr
Text:
Version: 2.2
Category: NOTE * accelerated rowMaxs function
Text:
Version: 2.2
Category: ADDED * included Q-matrix validation function (de la Torre,
2008
Text:
Version: 2.2
Category: ADDED * included joint maximum likelihood estimation and
Text: classification function for the mixed DINA/DINO model -> function
din.deterministic
Version: 2.2
Category: EXAMP * included another example (based on attribute vectors)
Text: in sim.din function
Version: 2.2
Category: ADDED * included polytomous GDINA model (Chen & de la Torre,
2013)
Text:
Version: 2.01
Category: FIXED * fixed a bug in gdm in multiple group estimation:
group
Text: labeling was incorrect and is now included in output group.stat
and displayed in summary.gdm
Version: 2.01
Category: NOTE * improved convergence behavior for multiple group
analysis
Text:
Version: 2.01
Category: NOTE * accelerated calculation in gdm: skillspace reduction
Text:
Version: 1.5
Category: NOTE * allowed for centering of intercepts and slopes in gdm
Text:
Version: 1.5
Category: ADDED * included satured skill distribution estimation in gdm
Text:
Version: 1.5
Category: FIXED * fixed a bug in the calculation of RMSEA itemfit,
although
Text: is not clear if the correct formula is used
Version: 1.5
Category: FIXED * fixed a bug in gdm with varying number of item
categories
Text: (thanks to Artur Pokropek)
Version: 1.5
Category: ADDED * included the multidimensional latent class IRT model
Text: (Bartolucci, 2007) in gdm (skillspace="est")
Version: 1.5
Category: NOTE * speeded calculation of modelfit.cor
Text:
Version: 1.4
Category: FIXED * eliminated a bug in GDINA function for link="log
Text:
Version: 1.4
Category: ADDED * included the parametrization of the reduced RUM model
in gdina
Text:
Version: 1.4
Category: ADDED * worked on higher order GDINA model which has the
argument
Text: HOGDINA in gdina. Now there is dependency on the 'fa' factor
analysis function in the psych package.
Version: 1.4
Category: ADDED * included log-likelihood extractor functions
Text:
Version: 1.4
Category: ADDED * included group-wise calculation of RMSEA statistics
Text: see itemfit.rmsea and the gdm output (thanks to Artur Pokropek)
Version: 1.4
Category: FIXED * (hopefully) fixed a bug in gdm function with
differing number of
Text: item categories (thanks to Artur Pokropek)
Version: 1.4
Category: NOTE * use frequency patterns in gdm to speed up calculations
Text: for large data sets (argument 'use.freqpatt' in gdm function)
Version: 1.4
Category: NOTE * included more than one step in gdm function
Text: arguments msteps (set to 8 M steps as the default) and convM
Version: 1.3
Category: ADDED * included the general diagnostic model (function gdm
Text:
Version: 1.3
Category: ADDED * included a function for calculating equivalent skill
classes
Text: for the DINA/DINO model
Version: 1.3
Category: ADDED * modelfit and anova functions are also accessible for
the GDM
Text:
Version: 1.3
Category: FIXED * fixed a bug in the function for classification
accuracy
Text:
Version: 1.3
Category: ADDED * included the RMSEA item fit index
Text:
Version: 1.3
Category: FIXED * fixed a bug in gdina estimation
Text:
Version: 1.3
Category: ADDED * included coef extractor function
Text:
Version: 1.2-3
Category: ADDED * included a model fit function modelfit.cor(.din) for
the
Text: comparison of observed and expected correlations
Version: 1.2-3
Category: FIXED * fixed a bug in the gdina function when applying the
model
Text: with one skill
Version: 1.2-1
Category: ADDED * allow for user specified reduced skill space designs
Text:
Version: 1.2-1
Category: ADDED * included tetrachoric correlations in summary.gdina
function
Text:
Version: 1.2-1
Category: ADDED * handled zero probability classes in gdina function
Text:
Version: 1.2-1
Category: ADDED * allowed for output and input of attribute patterns in
sim.din
Text: function
Version: 1.2-1
Category: NOTE * included relative deviance change as convergence
criterion in din
Text: function
Version: 1.2-1
Category: ADDED * included function for determining a statistically
equivalent
Text: DINA model (von Davier, 2013)
Version: 1.2-1
Category: NOTE * changed structure of din summary
Text:
Version: 1.2-1
Category: ADDED * included an anova function
Text:
Version: 1.2-1
Category: ADDED * included a function for estimating classification
reliability
Text:
Version: 1.2-1
Category: FIXED * fixed a bug in gdina function when creating design
matrices
Text:
Version: 1.2.0
Category: ADDED * implemented the latent skill space reduction
according
Text: to Xu and von Davier (2008)
Version: 1.2.0
Category: FIXED * fixed a bug in calculation of estimated parameters
Text:
Version: 1.2.0
Category: FIXED * fixed a bug in IDI calculation
Text:
Version: 1.2.0
Category: FIXED * corrected MLE based classification in case of latent
Text: classes with a priori spceified zero probability in the din
function (yet to be done in gdina)
Version: 1.2.0
Category: FIXED * fixed a bug in standard error calculation in gdina
Text:
Version: 1.2.0
Category: NOTE * speed improvements in din and gdina function
Text: included a C function for calculating the posterior distribution
Version: 1.2.0
Category: NOTE * check of admissible rule in gdina
Text:
Version: 1.2.0
Category: ADDED * include rule "GDINA2" and "GDINA1" ("GDINA1" is
Text: equivalent to "ACDM")
Version: 1.2.0
Category: ADDED * Simulation function for the GDINA model included
Text:
Version: 1.2.0
Category: ADDED * multiple group gdina function for estimation of
Text: generalized DINA models (de la Torre, 2011)
Version: 1.2.0
Category: ADDED * included new function summary.gdina
Text:
Version: 1.1
Category: NOTE * highest argument deleted from print.din method
Text:
Version: 1.1
Category: NOTE * new argument for summary.din n.skill.classes
Text:
Version: 1.1
Category: NOTE * skill pattern probabilities deleted from print.din
Text:
Version: 1.1
Category: NOTE * skill pattern summary replaced by n most frequent
skill
Text: classes in summary.din
Version: 1.1
Category: NOTE * (argument ask=TRUE in summary.din placed by
overwrite=FALSE
Text:
Version: 1.1
Category: NOTE * use a different item discrimination index (Lee et al.,
2012
Text:
Version: 1.1
Category: NOTE * remove GDINA estimation from this package version
because
Text: it is in an experimental status -> gdina will be included in CDM
>= 1.1-1
Version: 1.1
Category: NOTE * new optional attribute for q-matrix specification list
of skill
Text: labels
Version: 1.1
Category: NOTE * changed ouput in din function
Text: -> pattern, like and posterior are sorted according to the
original input data frame
Version: 1.1
Category: FIXED * remove a bug for models with only attribute
Text:
Version: 1.1
Category: ADDED * new argument for din method zeroprob.skillclasses
Text:
Version: 1.1
Category: ADDED * new argument for din method equal.itempars
Text:
Version: 1.1
Category: NOTE * new arguments for summary.din method log.file and ask
Text:
Version: 1.1
Category: FIXED * minor bug fixes in print.din method
Text:
Version: 1.1
Category: NOTE * replace internal method rowProds with faster rowProds2
Text:
Version: 1.1
Category: NOTE * option for writing an output file of model results
included in
Text: function summary.din
Version: 1.0
Text: [--- FIRST CRAN RELEASE ---]