new_simple_tree: Constructor for simple_tree class

In qshap: Fast Calculation of Feature Contributions in Boosting Trees

Constructor for simple_tree class

Description

Creates a simple_tree object with validation

Usage

new_simple_tree(
  children_left,
  children_right,
  feature,
  threshold,
  max_depth,
  n_node_samples,
  value,
  node_count,
  default_left = NULL,
  xgboost_split = FALSE
)

Arguments

children_left	Integer vector of left child indices (-1 for leaf nodes)
children_right	Integer vector of right child indices (-1 for leaf nodes)
feature	Integer vector of feature indices used for splitting (-1 for leaf nodes)
threshold	Numeric vector of threshold values for splits
max_depth	Integer maximum depth of the tree
n_node_samples	Numeric vector of node covers or weights, such as sample counts or summed Hessians
value	Numeric vector of node values
node_count	Integer total number of nodes in the tree
default_left	Logical vector indicating the missing-value direction.
xgboost_split	Logical; use XGBoost float32 strict-less routing.

Value

An object of class simple_tree

qshap documentation built on Aug. 23, 2026, 5:11 p.m.