tree_data_example

Small example of tree data, like that obtained when using `extractTreeData()` function.

datasets

Investigating and visualising Bayesian Additive Regression Tree (BART) (Chipman, H. A., George, E. I., & McCulloch, R. E. 2010) <doi:10.1214/09-AOAS285> model fits. We construct conventional plots to analyze a model’s performance and stability as well as create new tree-based plots to analyze variable importance, interaction, and tree structure. We employ Value Suppressing Uncertainty Palettes (VSUP) to construct heatmaps that display variable importance and interactions jointly using colour scale to represent posterior uncertainty. Our visualisations are designed to work with the most popular BART R packages available, namely 'BART' Rodney Sparapani and Charles Spanbauer and Robert McCulloch 2021 <doi:10.18637/jss.v097.i01>, 'dbarts' (Vincent Dorie 2023) <https://CRAN.R-project.org/package=dbarts>, and 'bartMachine' (Adam Kapelner and Justin Bleich 2016) <doi:10.18637/jss.v070.i04>.

Alan Inglis

bartMan

Create Visualisations for BART Models

Andrew Parnell

Catherine Hurley

Claus Wilke

tree_data_example function

A data frame with 14 rows and 4 columns representing the structure of trees:<dl>
 <dt>var</dt>
<dd>Variable name used for splitting.</dd> <dt>value</dt>
<dd>The value in a node (i.e., either the split value or leaf value).</dd> <dt>iteration</dt>
<dd>Iteration Number.</dd> <dt>treeNum</dt>
<dd>Tree Number in the iteration.</dd> ...</dl>

Format

tree_data_example — tree_data_example

A data frame with 14 rows and 4 columns representing the structure of trees:<dl>
 <dt>var</dt>
<dd>Variable name used for splitting.</dd>

 <dt>value</dt>
<dd>The value in a node (i.e., either the split value or leaf value).</dd>

 <dt>iteration</dt>
<dd>Iteration Number.</dd>

 <dt>treeNum</dt>
<dd>Tree Number in the iteration.</dd>

 ...

</dl>

tree_data_example: tree_data_example

Description

Usage

Arguments

Format