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IRTpp (version 0.2.6.1)
loglik.f: LogLikelihood of a IRT model
Description
LogLikelihood of a IRT model for UIRT (Fast version)
Usage
loglik.f(test, traits, z)
Arguments
test
A data frame or a matrix with the responses of the test.
traits
A vector with each individual parameter.
z
A list with the parameters a, b and c specified by keys. Each key must contain a vector of the item parameters for each parameter.
Value
The value of the loglikelihood.
See Also
loglik