DIF and DDF Detection by Non-Linear Regression Models

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Documentation for package ‘difNLR’ version 1.4.1

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difNLR-package DIF and DDF Detection by Non-Linear Regression Models.
AIC.ddfMLR Log-likelihood and information criteria for an object of '"ddfMLR"' class.
AIC.difNLR Log-likelihood and information criteria for an object of '"difNLR"' class.
AIC.difORD Log-likelihood and information criteria for an object of '"difORD"' class.
BIC.ddfMLR Log-likelihood and information criteria for an object of '"ddfMLR"' class.
BIC.difNLR Log-likelihood and information criteria for an object of '"difNLR"' class.
BIC.difORD Log-likelihood and information criteria for an object of '"difORD"' class.
coef.ddfMLR Extract model coefficients from an object of '"ddfMLR"' class.
coef.difNLR Extract model coefficients from an object of '"difNLR"' class.
coef.difORD Extract model coefficients from an object of '"difORD"' class.
coefficients.ddfMLR Extract model coefficients from an object of '"ddfMLR"' class.
coefficients.difNLR Extract model coefficients from an object of '"difNLR"' class.
coefficients.difORD Extract model coefficients from an object of '"difORD"' class.
ddfMLR DDF detection for nominal data.
difNLR DIF detection using non-linear regression method.
difORD DIF detection among ordinal data.
estimNLR Non-Linear Regression DIF models estimation.
fitted.difNLR Fitted values and residuals for an object of '"difNLR"' class.
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 Log-likelihood and information criteria for an object of '"ddfMLR"' class.
logLik.difNLR Log-likelihood and information criteria for an object of '"difNLR"' class.
logLik.difORD Log-likelihood and information criteria for an object of '"difORD"' class.
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 ICC plots for an object of '"ddfMLR"' class.
plot.difNLR ICC and test statistics plots for an object of '"difNLR"' class.
plot.difORD ICC plots for an object of '"difORD"' class.
predict.ddfMLR Predicted values for an object of '"ddfMLR"' class.
predict.difNLR Predicted values for an object of '"difNLR"' class.
predict.difORD Predicted values for an object of '"difORD"' class.
resid.difNLR Fitted values and residuals for an object of '"difNLR"' class.
residuals.difNLR Fitted values and residuals for an object of '"difNLR"' class.
startNLR Calculates starting values for non-linear regression DIF models.
_PACKAGE DIF and DDF Detection by Non-Linear Regression Models.