R/RcppExports.R
posterior.Rd
Calculate posterior for one item given score, difficulty and prior
posterior(score, tau, prior, qp)
score | Integer, either 0 (fail) and 1 (pass) |
---|---|
tau | Numeric, difficulty parameter |
prior | Vector of prior values on quadrature points |
qp | vector of equally spaced quadrature points |
A vector of length length(prior)
This function assumes that the difficulties have been estimated by
a binary Rasch model (e.g. by
sirt::rasch.pairwise.itemcluster()
).
: Internal function
Stef van Buuren, Arjan Huizing, 2020