Changes in Version 0.6.1-0 o added the function pairwise.SepRel() to compute the Person Separation Reliability Changes in Version 0.6.0-0 o added the data.frame with the Knox Cube Test Data from Wright & Stone (1979) o added the option of MINCHI estimation for item parameters Changes in Version 0.5.0-2 o fixed error message during re-building of vignette outputs Changes in Version 0.5.0-1 o added S3 method 'residuals' for objects of class 'pers' resulting from function pers() Changes in Version 0.5.0-0 o added estimation of thresholds for Rater severity / repeated measurement in function pair() Changes in Version 0.4.5-1 o fixed the 'S4 exports' issue Changes in Version 0.4.5-0 o added a summary method for objects of class 'q3' resulting from function q3() for Yens (1984) Q3 fit statistic o fixed a bug in the calculation of the max and min values in the Q3 statistic (thanks to Moritz Heene! for the hint) Changes in Version 0.4.4-6 o fixed the '`class(.) == *`' issue o changed pairwise specific object class for results from functions pairwise.person.fit() and pairwise.item.fit() to 'pifit' and 'ppfit' respectively o changed pairwise specific object class for results from function pairwise.S() 'pairS' Changes in Version 0.4.4-5.3 o fixed a minor bug in (deprecated) internal function 'pvx.super' Changes in Version 0.4.4-5.2 o added citation information Changes in Version 0.4.4-5.1 o changed internal datapreperation tasks to keep the order of person (estimates) for output. Changes in Version 0.4.4-4 o extended the main function 'pair()' to use case weights for item parameter calculation. Changes in Version 0.4.4-3 o changed internal datapreperation tasks (rownames for persons). o changed: pairwise will globaly change 'options(stringsAsFactors = FALSE)' when applying 'pair()' or 'pers()' Changes in Version 0.4.4-2 o fixed (changed) summary funtion for objects of class 'pairwise.person.fit'. o extended function Q() with two arguments to compute the Q person-fit-index based on response data and threshold parameters. Changes in Version 0.4.4-1 o cleaned up in function Q() to compute the Q person-fit-index proposed by Tarnai and Rost (1990). Changes in Version 0.4.3-1 o added function Q() to compute the Q person-fit-index proposed by Tarnai and Rost (1990). Changes in Version 0.4.2-1 o added function q3() to compute Yen's Q3 fit statistic. o changed structure of result object of function rfa(). Changes in Version 0.4.2-1 o fixed a bug in function ptbis(). Changes in Version 0.4.2 o enhanced plotting method for object of class "pers". o added function pairwise.S() to perform the Fischer-Scheiblechner statistic 'S'; a 'Wald like test' on item level. Changes in Version 0.4.1 o added function deltapar() to compute delta or rather item step parameters from thurstonian threshold parameters. o added argument p in function logLik.pers(). Changes in Version 0.4.0 o fixed minor bug in function pers() relating to passing throug arguments from "pair" object under special data situations. o fixed minor bug in function andersen.pers() concerning reading arguments from "pers" object. Changes in Version 0.3.2 o further enhancements. o fixed a minor bug in function gif(). o fixed a minor bug in plotting methods for item parameters. Changes in Version 0.3.0 o added wighted Likelihood in result object of function pers(). o added summary function for pairwise.person.fit(). o added summary function for pairwise.item.fit(). o added function simra(). o added function andersentest.pers(). o added covariate data to the bfiN and bfiN_miss data sets. o added logical option itemNames = 'TRUE / FALSE' in ploting method for objects of class "pers". o changed structure of result in pairSE() and changed depending functions. o added the function lrtest.pers() to perform a likelihood ratio test against the saturated model for object of class "pers" o changed internal calculations for powers of the pairwise comparison matrix. o make use of transpose logical in S3 method for rfa - plot.rfa(). o extended options of argument pot in func. pair(). o fixed a bug in S3 method logLik.pers when calculating the degrees of freedom. Changes in Version 0.2.5 o added the S3 method logLik.pers to extract the Log-Likelihood for object of class "pers" o added the function rfa() and its plotting and summary S3 method to perfom rasch residual factor analysis proposed by Wright (1996) and further discussed by Linacre (1998). o added the function iff() to plot or return values for Item Information Function. o added the function tff() to plot or return values for Test Information Function. o added two example dataset (kft5 and Neoffi) used in Rost (2004). o added an optional argument in function pers() for calculation of the WLE reliability. o changed spliting argument in function grm() and changed S3 methods plot and summary for objects of class "grm" o fixed a minor bug in S3 method plot.grm when defining axis annotation o fixed a error messages which occured under extreme sparse data situations using function pers() Changes in Version 0.2.4 o fixed a mismatch when calcualting item and person fit statistic under booklet design circumstances o fixed some error messages which occur under extreme sparse data situations in some internal functions. o added WLE Reliability in object of class "pers". o changed summary method for object of class "pers". o added plotting method for object of class "pers" and documentation. This plots a person item map. Changes in Version 0.2.2 o added main function pair() for item parameter calculation for dicho- or polytomuous data . Data with unequal number of categories for items can be processed. o added main function pers() for person parameter (WLE) calculation for dicho- or polytomuous data. Data with unequal number of categories for items can be processed. o added function ptbis() for calculation of point biserial correlations for dicho- or polytomous item categories with total scale. o added person - pairwise.person.fit() - and item - pairwise.item.fit() - fit indices. o added function for tabulation of response data - ftab(). o added function for expected score curves plots - esc(). o added function for category probability plots - catprob(). o added function for graphical item fit by empirical category probability plots - gif(). o added another (small) example dataset sim200x3, containing simulated Data with one dichotomous and two polytoumous items with 200 observations. o added a (large) example data structure DEU_PISA2012 - for a detailed description of the data structure see the section User guides, package vignettes and other documentation. o changed the plotting methods for "pair"", "grm" and "pairSE" and added documentation for them. o removed deprecated functions (from version 0.1.5): itempar.dicho(), itempar.poly(), grmSE.dicho(), grmSE.poly(), ipSE.dicho(), ipSE.poly(), ppML.dicho(), ppWL.dicho(), thetaML.dicho(), thetaWL.dicho, ptbis.dicho(). Those functions are therefore only available in older version of pairwise in the CRAN archive. ---------------------------------------------------------------------------------------- Changes in Version 0.1.5 o added function for Point Biserial Correlations ptbis.dicho() (dicotoumous items) o added function for handling booklet designs make.incidenz() o added functions for person parameter estimation (ML & WL) and summary method (dicotoumous items) o added summary method for graphical model-check dichotomuos (object of class "grmSE") o added summary method for graphical model-check polytomuos (object of class "grmSEpo") Changes in Version 0.1.4 o added the argument zerocor in the functions for parameter calculations - see descriptions of functions o changed some matrix calculations to enhance processing speed (due to a tip from Alexander Robitzsch)