calc_posterior | R Documentation |
Calculate a posterior value of theta.
calc_posterior(x, item_parm, resp, ncat, model, prior, prior_parm)
x |
A length-one numeric vector for a theta value. |
item_parm |
A numeric matrix of item parameters. |
resp |
a numeric vector containing item responses. |
ncat |
A numeric vector of the number of response categories by item. |
model |
A numeric vector indicating the IRT models of each item (1: 1PL, 2: 2PL, 3: 3PL, 4: PC, 5: GPC, 6: GR). |
prior |
The type of prior distribution (1: normal, 2: uniform). |
prior_parm |
A numeric vector of hyperparameters for the prior distribution, c(mu, sigma) or c(ll, ul). |
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