select_random: Item selection by random draw from the remaining item bank.

In meow: Unified Framework for Computer Adaptive Testing Simulations

Item selection by random draw from the remaining item bank.

Description

Each respondent's next item is drawn at random from the items they have not yet been administered.

Usage

select_random(pers, item, R, admin, adj_mat = NULL, select_seed = NULL)

Arguments

pers	A data frame of current respondent ability estimates.
item	A data frame of current item parameter estimates.
R	A respondent-by-item matrix of potential responses.
admin	An integer administration matrix; 0 indicates an item has not been administered to a respondent. See meow() for details.
adj_mat	An item-item adjacency matrix. See construct_adj_mat().
select_seed	A random seed used only for item selection. The seed is cleared after use so that successive simulations vary unless a seed is given.

Value

An updated administration matrix with a random next item marked for each respondent.

Examples

sim <- meow(select_random, update_theta_mle, data_simple_1pl,
            data_args = list(N_persons = 10, N_items = 10), fix = "item",
            select_args = list(select_seed = 1))
nrow(sim$results)

meow documentation built on July 6, 2026, 5:11 p.m.