DIF and DDF Detection by Non-Linear Regression Models

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Documentation for package ‘difNLR’ version 1.3.2

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difNLR-package DIF and DDF Detection by Non-Linear Regression Models.
AIC.ddfMLR DDF detection for nominal data.
AIC.difNLR DIF detection using non-linear regression method.
AIC.difORD DIF detection for ordinal data.
BIC.ddfMLR DDF detection for nominal data.
BIC.difNLR DIF detection using non-linear regression method.
BIC.difORD DIF detection for ordinal data.
checkInterval Checks interval bounds.
coef.ddfMLR DDF detection for nominal data.
coef.difNLR DIF detection using non-linear regression method.
coef.difORD DIF detection for ordinal data.
ddfMLR DDF detection for nominal data.
difNLR DIF detection using non-linear regression method.
difORD DIF detection for ordinal data.
estimNLR Non-Linear Regression DIF models estimation.
fitted.difNLR DIF detection using non-linear regression method.
formulaNLR Formula for non-linear regression DIF model.
genNLR Generates data set based on generalized logistic regression DIF and DDF models.
GMAT Dichotomous dataset based on GMAT with the same total score distribution for groups.
GMAT2 Dichotomous dataset based on GMAT.
GMAT2key Key of correct answers for 'GMAT2test' dataset.
GMAT2test Dataset based on GMAT.
GMATkey Key of correct answers for 'GMATtest' dataset.
GMATtest Dataset based on GMAT with the same total score distribution for groups.
logLik.ddfMLR DDF detection for nominal data.
logLik.difNLR DIF detection using non-linear regression method.
logLik.difORD DIF detection for ordinal data.
MLR DDF likelihood ratio statistics based on multinomial log-linear regression model.
MSATB Dichotomous dataset of Medical School Admission Test in Biology.
MSATBkey Key of correct answers for 'MSATBtest' dataset.
MSATBtest Dataset of School Admission Test in Biology.
NLR DIF statistics based on non-linear regression model.
ORD DIF likelihood ratio statistics for ordinal data.
plot.ddfMLR DDF detection for nominal data.
plot.difNLR ICC and test statistics plots for '"difNLR"' object.
plot.difORD DIF detection for ordinal data.
predict.difNLR Predicted values for '"difNLR"' object.
print.ddfMLR DDF detection for nominal data.
print.difNLR DIF detection using non-linear regression method.
print.difORD DIF detection for ordinal data.
resid.difNLR DIF detection using non-linear regression method.
residuals.difNLR DIF detection using non-linear regression method.
startNLR Calculates starting values for non-linear regression DIF models.
_PACKAGE DIF and DDF Detection by Non-Linear Regression Models.