bartMachine (version 1.4)

node_prediction_training_data_indices: Gets node predictions indices of the training data for new data.

Description

This returns a binary tensor for all gibbs samples after burn-in for all trees and for all training observations.

Usage

node_prediction_training_data_indices(bart_machine, new_data = NULL)

Value

Returns a binary tensor indicating whether the prediction node contained a training datum or not. For each observation in new data, the size of this tensor is number of gibbs sample after burn-in times the number of trees times the number of training data observations. This the size of the full tensor is the number of observations in the new data times the three dimensional object just explained.

Arguments

bart_machine

An object of class ``bartMachine''.

new_data

Data that you wish to investigate the training sample weights. If NULL, the original training data is used.

Examples

if (FALSE) {
set.seed(11)
n = 50
X = data.frame(x1 = rnorm(n), x2 = runif(n))
y = X$x1 + rnorm(n)
bart_machine = bartMachine(X, y, flush_indices_to_save_RAM = FALSE)
idx = node_prediction_training_data_indices(bart_machine)
}