swh:1:snp:9492dda1ea1583c5fa5285d6ddcd2ab9f57129b4
Tip revision: 453534604193145d7719a4267a0c53946f5c553b authored by Patrick Mair on 06 December 2013, 00:00:00 UTC
version 0.15-3
version 0.15-3
Tip revision: 4535346
NEWS
Changes in Version 0.15-3
o an error in test_info() was fixed
Changes in Version 0.15-2
o an error in Tpbis.stat was fixed
Changes in Version 0.15-1
o a bug in person.parameter() has been fixed that caused the estimation to crash in some cases
o a bug in thresholds() has been fixed that caused the routine to crash
Changes in Version 0.15-0
o the RaschSampler package has been merged into eRm for convenience (still available as a separate package)
Changes in Version 0.14-5
o the package is now byte-compiled by default.
o some statistics added to NPtest, T7 and T7a removed.
o fixed a bug in plotPWmap().
o fixed the "mplot" argument in plotting routines.
o fixed the split-criterion "all.r" in LRtest.
o deleted all usages of data() in examples, since eRm uses "lazy data".
Changes in Version 0.14-4
o when calling NPtest the RaschSampler can now be
controlled more spcifically (burn_in, step, seed).
o various improvements and bugfixes for LLRA related functions.
o person parameter values can be extracted now for all persons using coef().
Additionally, in-/exclusion of extrapolated values (for 0 and perfect
scores) can be controlled via the argument "extrapolated".
o LRtest now computes standard errors (se = TRUE) by default.
o plotDIF now plots 'difficulties' for all models (formerly, 'easiness'
parameters were plotted for Rasch models).
Changes in Version 0.14-3
o minor bug fixed in plotGOF, where on rare occasions
confidence ellipses were plotted together with control
lines (spotted by Peter Parker)
o improved labelling in plotjointICC
Changes in Version 0.14-2
o warning regarding group assignment when using median
or mean split removed from MLoef
o modification in NPtest to split long output lines
o changed the delimiters of plotDIF confidence intervals to
pch = 20 (small bullet).
Changes in Version 0.14-1
o new experimental functions to calculate and plot item
and test information (by Thomas Rusch)
o bug fixed in the calculation of item and person Infit t
and Outfit t (hint from Rainer Alexandrowicz).
o eRm no longer depends on the RaschSampler package. However,
it must be installed to use NPtest.
o changed the delimiters of plotDIF confidence intervals to
pch = 20.
Changes in Version 0.14-0
o new (wrapper) function LLRA for fitting linear logistic
models with relaxed assumptions including utilities for
preparing data (llra.datprep), setting up (build_W) and
modifying (collapse_W) design matrices, comparing llra
models (anova) and plotting results (plotTR and plotGR)
(by Thomas Rusch)
o 'exact' version of the Martin-Loef test for binary items and
arbitrary splits added as method to NPtest
o in plotGOF confidence ellipses can now be drawn for
subsets of items, optionally using different colours
o new function plotDIF (by Kathrin Gruber): plots confidence
intervals for item parameters estimated separately in
subgroups, uses LR objects as input
o adapted the MLoef function to work with polytomous data
and more than two item groups
o error checks in NPtest: (i) 0/full resposes for items
meaningless for NPtest, (ii) group in method="T4" must
be of type logical, (iii) specifying all items for
T4 gives meaningless results.
o warning regarding group assignment when using median
split removed from LRtest and Waldtest
o some modifications in plotPWmap: horizontal plotting,
different default plotting symbols, option to change
size of plotting symbols
o bug in MLoef fixed (now using logs in calculating the
person contributions)
o eRm now depends on R >= 2.12.0
o Latin1 encoding removed
o bug in plotICC (always same title) fixed
Changes in Version 0.13-0
o LLTM, LRSM, and LPCM work now for repeated measurement
designs with treatment groups and missing values.
o Rename vignette to 'eRm'.
Changes in Version 0.12-2
o new function plotPWmap to plot Bond-and-Fox style
pathway maps for the data by Julian Gilbey. Since
calculation of the t-statistics requires calculation
of the kurtosis of the standardized residuals,
according changes to itemfit.ppar, personfit.ppar,
pifit.internal, print.ifit, and print.pfit.
o plotPImap patched by Julian Gilbey: length of item.subset
did not match the documentation, warning stars did not all
appear, pre-calculated person.parameter data can be passed
to the function via pp, mis-ordered items can be coloured.
some minor bugs fixed.
o the optimizer can be changed to optim using fitctrl<-"optim"
and reset to nlm (the default) with fitctrl<-"nlm"
o value of LRtest now countains the list fitobj which contains
the model objects according to the subgroups specified by
splitcr
o MLoef no longer supports missings values
Changes in Version 0.12-1
o function invalid from package gtools integrated into eRm
eRm no longer depends on gtools
Changes in Version 0.12-0
o for RM, RSM, and PCM: eta parameters are now
diplayed as difficulty parameters
print and summary methods changed accordingly
o new labeling of eta parameters in RM, RSM, and PCM.
they now are labeled according to the estimated
parameters for items (RM), items + categories (RSM),
items x categories (PCM)
o function MLoef for Martin-Loef-Test added
o df in personfit and itemfit corrected
o the logLik functions now extract the log-likelhood
and df into objects of class logLik.eRm and loglik.ppar
with elements loglik and df. the corresponding
print methods have been modified accordingly.
o function coef.ppar to extract person parameter estimates added
o option for beta parameters added to coef.eRm
o in confint.eRm: default parm = "beta"
o minor modifications in the help file for IC()
o plotPImap: revised rug added, bug concerning item.subset fixed,
minor modifications to enhance readability
o minor modifications in plotjointICC: allows for main title and colors,
option legpos = FALSE suppresses legends, dev.new removed,
legend = FALSE produced incorrect labeling
o minor modifications in plotICC: allows for main title and colors,
default coloring with col = NULL instead of NA for compatibility,
option legpos = FALSE suppresses legends, mplot is now FALSE if
only one item is specified
o plot.ppar: dev.new removed
o option 'visible' in print.ifit und print.pfit to allow for avoiding
overly long output and for extraction of infit and outfit values
(maybe changed to a coef method later)
o strwrap() for NPtest print methods to break long lines
o new methods IC.default and pmat.default for enhanced error messages
o lazy loading package and datafiles