| dicrfN {lazy.irt} | R Documentation |
Calculation of the Derivative of Item Response Function of Nominal Items
dicrfN(param, theta, smallP = 0, print = 0, plot = 0, debug = 0, DinP = 1)
param |
Item Parameter Data Frame |
theta |
Discrete theta values |
smallP |
Minimum value of probability |
print |
= 1 to print result |
plot |
= 1 to plot result |
debug |
= 1 to print intemediate result |
DinP |
= 1 to include D=1.7 in logistic function |