stagedtrees (version 2.3.0)

depsubtree: Extract dependency subtree

Description

Extract the dependency subtree of a staged tree with respect to a variable

Usage

depsubtree(object, var, other_stages = c("NA", "indep", "full"))

Value

an object of class sevt representing the dependency sub-tree.

Arguments

object

an object of class sevt.

var

the name of one of the variable of the staged event tree.

other_stages

how to set stages for other variables (if any).

Details

The dependency sub-tree is a staged event tree which is sufficient to describe the conditional distribution of the variable var given its predecessors in the original tree represented by object. In particular the preceding variables are restricted to the parents of var in the minimal-DAG obtained with as_parentslist. This is the minimal set of variables which contexts are sufficient to fully represent the conditional distribution of var. Stages for variables different from var are either set to NA, or to the full or indep model, depending on other_stages.

Examples

mod <- stages_kmeans(full(Titanic), k = 2)
par(mfrow = c(1, 2))
plot(mod, main = "staged tree")
plot(depsubtree(mod, "Age"), main = "dependency subtree for Age")
par(mfrow = c(1, 1))