Description Usage Arguments Value Examples
Estimate the latent traits of the individuals in a test with some given item parameters.
1 2 | individual.traits(model, itempars, method, dataset = NULL,
probability_matrix = NULL)
|
model |
The model used to calibrate the parameters. |
itempars |
The item parameters for the model in matrix form. |
method |
The method for estimating the traits, may be "EAP" or "MAP". |
dataset |
The matrix with the responses from the individuals. |
probability_matrix |
The probability matrix in case it does not need to be recalculated. |
A list with the patterns and the estimated latent traits.
1 2 3 4 5 6 7 8 | ## Simulation data for the model "3pl"
# data <- simulateTest(model = "3PL", items = 100, individuals = 1000)
## Estimation of the parameters
# est <- irtpp(data$test, model = "3PL")
## Parameter Matrix
# z <- parameter.matrix(est$z)
#trait <- individual.traits(model = "3PL", itempars = z, dataset = data$test,
# method = "EAP", probability_matrix = est$prob_mat)
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