create_levels {cat.dt} | R Documentation |
Generates a list of node lists for a specific level of the CAT decision tree
create_levels(
nodes_prev,
bank,
crit,
C,
nres,
level,
prob_array,
limit,
tol,
inters,
SE
)
nodes_prev |
list of node lists of the nodes from the previous level |
bank |
matrix of the item bank. Rows represent items, and columns
represent parameters. If the model is |
crit |
item selection criterion. Options: "MEPV" for Minimum Expected Posterior Variance and "MFI" for Maximum Fisher Information |
C |
vector of item capacities |
nres |
vector of number of possible responses for every item |
level |
level number |
prob_array |
3-D array of probability responses. Dim 1 represent items, dim 2 represent evaluated ability levels and dim 3 represent possible responses |
limit |
maximum number of level nodes |
tol |
maximum distance between estimated ability levels in the nodes of the evaluated pair in order to consider whether to join them |
inters |
minimum common area between density functions in the nodes of the evaluated pair in order to join them |
SE |
minimum standard error of the ability level |
A list of lists and a scalar. Each of the lists represent a node of the specified level of the decision tree, and the scalar represents if the created level is the last (1) or not (0) due to the SE stopping criterion
Javier Rodr?guez-Cuadrado