Description Usage Arguments Value
Computes a named list of derivatives of the IRF of the one-parameter RSC model. Uses 2PL model for individual responses.
1 | d_RSC(u, parms, theta1, theta2)
|
u |
the logit of the weight parameter of the RSC model. |
parms |
a data.frame with columns |
theta1 |
the latent trait of member 1. |
theta2 |
the latent trait of member 2. |
a named list of derivatives, with elements c("dw", "dtheta1", "dtheta2")
.
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