Change - a bug in Qval for stepwise method was
fixed
Added - AICc for GDINA estimates
Added. - itemfitPD for PD family fit statistics
Change. - parallel computing for itemfitPD and
bootSE functions
Change. - rename all real data to have consistent names
GDINA 2.9.9
Added - MCmodel function can handle multiple
groups
Change - MCmodel will randomly assign students into
equivalent groups
Added - dif function can detect differential category
functioning for sequential models
GDINA 2.9.4
Change - update input check function
GDINA 2.9.3
Change - update simGDINA to handle CDMs with attribute
structures
Added - add an argument SE for MCmodel function
Added - add nloptr for optimization
Added - SISM model is available using the GDINA
function and simGDINA function
Change - BUG-DINO model was revised in the GDINA
function
Change - examples
GDINA 2.8.8
Change - update the package to remove the dependence on nloptr
package
GDINA 2.8.7
Change - data set: sim10MCDINA
Change - GDINA function can accept factor or char
vector for group argument
Change - forward search algorithm implemented in dif
function now
Change - Qval for Q-matrix validation using an
iterative and dynamic procedure
Added - data set: sim10MCDINA2
Fixed - CA function for models with attribute
structures
Fixed - GDINA function when one set of initial values
was used (Thanks to Hulya Yigit)
Fixed - Mord statistic calculation in modelfit function
when attribute structure exists (Thanks to Haiymiao Yuan)
GDINA 2.8.0
Changed - add reference to the JSS article
Changed - clean references
GDINA 2.7.9
Changed - data set format so the package can be used for R versions
prior to 3.5
GDINA 2.7.8
Added - mesa plot for validating Q-matrix based on sequential G-DINA
model
Fixed - A bug in GMSCDM function (Thanks to Ouyang
Xueyuan)
Changed - examples and documentations of GDINA
function
Changed - argument of simGDINA function
GDINA 2.7.3
Added - Q-validation and model comparison when joint attribute model
is not saturated
Fixed - absolute fit statistics disappear in GUI (since version
2.7.0)
Fixed - error in calculating CAIC for GDINA estimation (since
version 2.7.0)
GDINA 2.7.0
Added - MC-DINA model can be estimated using MCmodel
function
Added - more components can be extracted using extract
function
Fixed - Qval for sequential model using Wald test
(since version 2.5.2)
Added - print CAIC and SABIC indices for GDINA estimations
Changed - bootstrap SEs can be calculated for models with structured
attributes
Added - convergence is checked for GDINA function
Changed - Bonferroni method is replaced by Holm–Bonferroni method as
default settings for multiple comparisons in dif,
itemfit and modelcomp
GDINA 2.6.0
Fixed - a mistake in BIC calculation (since version 2.5.2)
Fixed - M2 calculation in modelfit was incorrect for
LLM and RRUM
Changed - M2 in modelfit can be calculated for
higher-order or independent models of joint attribute distribution
GDINA 2.5.2
Added - ICLA() function for attribute profile
estimation
Changed - data are aggregated before model estimation for single
group CDMs
Deleted - exported internal functions are removed
Fixed - print.GDINA()` prints valid number of
individuals by default now
Fixed - covariance matrix cannot be calculated when some individuals
are deleted
Fixed - Qval not work when estimated number of
individuals in some latent classes are 0
Fixed - extract only gives valid data
GDINA 2.4.0
Added - Predicted cutoff based on the data for Q-matrix
validation
Changed - add .5 for elements 0 when calculating log odds statistic
for item fit
Fixed - model fit cannot be printed in GUI when M2 cannot be
calculated
GDINA 2.3.2
Added - Attribute Hierarchical structure for A-CDM, LLM and
RRUM
Added - Estimating generalized multiple strategy CDMs using
GMSCDM
Changed - att.str argument of the GDINA
function has been updated
Changed - several examples in GDINA function
Fixed - The number of parameters is not correct when attribute
strcture exists
GDINA 2.2.0
Changed - set anchor attributes for multiple group higher-order
CDMs
Changed - change arguments for dif function
Changed - print estimated mixing proportions in R GUI
Changed - GUI has been largely improved
Changed - update modelcomp function to provide selected
models directly
Fixed - calculation of the number of parameters when parameters of
some items are fixed
Fixed - mesa plot with best q-vectors when some q-vectors have the
same PVAF
Fixed - bug when calculating standard error using complete
information based on multiple group models
GDINA 2.1.15
Changed - arguments for plot function
Added - additional example for ecpe data
Changed - graphical interface
GDINA 2.1.7
Added - experimental functions for simulating and estimating
diagnostic tree model (to be optimized)
Fixed - bugs in dif function and
startGDINA function
Changed - logLik function to be consistent with default
S3 methods
Added - Q-matrix validation using stepwise Wald test
GDINA 2.0.7
bug fixed
GDINA 2.0
This is a major update including a large number of new features. The
GDINA function has been largely rewritten for both
flexibility and speed. Users are now allowed to fit MS-DINA
model, Bugs models, and define models by providing design
matrix and link functions. For joint attribute distribution, in addition
to saturated and higher-order models, users are now allowed to fit
independent model and loglinear model. Code for joint attribute
distribution modelling has been restructured as well. Other major
updates include model fit evaluation using M2 statistics and other
limited information measures, item-level model selection using
likelihood ratio test and score test, classification accuracy evaluation
indices, bootstrap standard error estimation, etc.
Note that due to the major updates, some results from this version
may be slightly different from those using the previous versions.
GDINA 1.4.2
Fixed - a bug in modelcomp in the version 1.4.1
Changed - adjusted p values are provided for DIF detection
GDINA 1.4.1
Changed - update GUI interface startGDINA to report
absolute fit statistics
Changed - estimation methods for higher-order models were
adjusted
Changed - priors can be imposed to structural paprameters in
higher-order models
Changed - missing values were identified when calculating
likelihood
Changed - GDINA function arguments were modified
Changed - outputs for npar,
AIC,BIC,logLik and
deviance functions are modified
Changed - anova function is changed and multiple models
can be comparied
Changed - print function for the GDINA function is
changed
Changed - summary function is changed
Changed - objects returned from extract function are
not rounded
Fixed - bug when extracting covariance matrix and discrimination
index (thanks to Kevin Carl Santos)
Fixed - bug in dif function when DIF items are
specified
Fixed - bug for calculating standard errors for sequential
models
Fixed - bug - recover the random seeds after running
GDINA and itemfit
Added - standard errors using complete information matrix
Added - output for initial.catprob in
extract function
Added - function LC2LG to find equivalent latent
groups
Added - function score to find score functions
Added - Standard error estimation based on complete information is
available
GDINA 1.2.1
Fixed - bugs in model estimation with user specified structures
Fixed - bugs in summary.GDINA function for multiple
group estimation
Changed - include the pseudo q-vector 0 for the mesa plot
Changed - prior distribution is not re-calculated after likelihood
calculation in GDINA function
Changed - output for att.prior in extract
function
Changed - print number of group for GDINA function
Changed - documents in simGDINA and
GDINA
Changed - examples in GDINA
Added - extract ngroup using extract.GDINA
function
GDINA 1.2.0
Fixed - infinite value issue during M-step optimization
Fixed - itemfit function for missing data
Fixed - adding monotonic constraints for the sequential models
Fixed - the maximum likelihood estimation of person attribute
through personparm
Changed - package imports, and suggests
Changed - slsqp as the first optimizer used for monotonic
G-DINA