create_node {cat.dt}R Documentation

Node creator

Description

Generates a list that represents a specific node of the CAT decision tree

Usage

create_node(ID, dens_vec, item, item_prev, est, SE, ID_sons, D, as_val)

Arguments

ID

integer that represents the specified node identification in the form of 10000*level+position.

dens_vec

vector of the density function values in the specified node of the evaluated ability levels

item

integer that represents the item of the specified node

item_prev

vector of items of the previous nodes

est

estimated ability level in the specified node

SE

standard error of the estimated ability level

ID_sons

data frame containing the information of the sons of the specified node. Rows represent sons and columns represent the ID of the son, the response given to the item of the specified node that leaded to the son and the probability of reaching the son given that response (not equal to one if the son had previously splitted)

D

confluency of the specified node

as_val

associated value of the specified node. It can be the MSE if the selection criterium is "MEPV" and the FI if the selection criterium is "MFI"

Value

A list that represents a node of the decision tree

Author(s)

Javier Rodr?guez-Cuadrado


[Package cat.dt version 0.3.1 Index]