cat_sim function simulates computerized adaptive test (CAT) for
one or more simulees. For long simulations, cat_sim_fast
function can be used.
cat_sim(true_ability, cd, verbose = -1)True ability vector to generate item responses.
A cat_design object that is created by function
create_cat_design.
This is an integer that will print the stage of the test.
For example, if the value verbose = 10, a message will be printed at
each 10th iteration of the cat_simulation. Default value is -1,
where no message will be printed. If the value is 0, only the
start time and end time of the simulation will be printed.
If the length of true_ability vector is one a
"cat_output" class output will be returned.
This is a list containing following elements:
True ability (theta) value to generate item responses.
A list where each element represent a step of the CAT test. It has following elements:
The estimated ability before the administration of the item.
The standard error of the estimated ability before the administration of the item.
TRUE if the item belongs to a testlet.
Item-class object that is administered at
this step.
The simulated response of the simulee for the item
administered at this step using simulee's true_ability
value.
The estimated ability after the administration of the item.
The standard error of the estimated ability after the administration of the item.
If the length of the true_ability is more than 1, a list of
cat_output objects will be returned for each value of
true_ability.
# NOT RUN {
ip <- generate_ip(n = 50)
# Check the default:
cd <- create_cat_design(ip = ip)
cat_sim(true_ability = rnorm(1), cd = cd)
# }
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