SimResult-class {RSCAT}

CAT simulation result

Description

An S4 class to represent CAT simulation results.

Slots

numExaminees

a positive integer representing the number of simulated examinees.

trueThetas

a numeric vector representing the true theta values of simulated examinees.

finalThetas

a numeric vector representing the final theta estimates of simulated examinees.

finalThetaSEs

a numeric vector representing the final theta estimate standard errors (SEs) of simulated examinees.

estThetas

a list of length numExaminees. Each element of the list is a numeric vector representing theta estimate at adaptive stages for the simulated examinee.

estThetaSEs

a list of length numExaminees. Each element of the list is a numeric vector representing theta estimate standard error (SE) at adaptive stages for the simulated examinee.

scores

a list of length numExaminees. Each element of the list is a numeric vector representing scores at adaptive stages for the simulated examinee. 0 for an incorrect repsonse and 1 for a correct respone.

itemsAdministered

a list of length numExaminees. Each element of the list is a character vector representing identifiers of adminsitered items at adaptive stages for the simulated examinee.

shadowTests

a list of length numExaminees. Each element of the list is also a list representing the shadow test assembled at each adaptive stage.

engineTime

a list of length numExaminees. Each element of the list is a numeric vector representing the engine time at each adaptive step. the engine time includes time consumed by CAT algorithms and shadow test assembly.