structure_ratio_grow: Tree structure ratio for grow

In brunaw/hebart: Hierachical Embedded Bayesian Additive Regression Trees

Tree structure ratio for grow

Description

Tree structure ratio of the candidate tree and the previous tree, given that the action step was a grow

Usage

structure_ratio_grow(
  tree,
  current_node,
  current_selec_var,
  p_vars,
  alpha_grow,
  beta_grow
)

Arguments

tree	The current tree
current_node	The current grown node
current_selec_var	The variable selected for the split
p_vars	The number of available predictors.
alpha_grow	The alpha of the growing probability
beta_grow	The beta of the growing probability

Details

For the tree structure ratio of the new tree, we need the probabilities of:

Value

The tree structure ratio

Author(s)

Bruna Wundervald, [e-mail].

brunaw/hebart documentation built on June 1, 2022, 8:35 p.m.