TRUST: Transparent, Robust and Ultra-Sparse Trees

Fuente: arXiv
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Main Author: Dorador, Albert
Format: Preprint
Published: 2025
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author Dorador, Albert
author_facet Dorador, Albert
contents Piecewise-constant regression trees remain popular for their interpretability, yet often lag behind black-box models like Random Forest in predictive accuracy. In this work, we introduce TRUST (Transparent, Robust, and Ultra-Sparse Trees), a novel regression tree model that combines the accuracy of Random Forests with the interpretability of shallow decision trees and sparse linear models. TRUST further enhances transparency by leveraging Large Language Models to generate tailored, user-friendly explanations. Extensive validation on synthetic and real-world benchmark datasets demonstrates that TRUST consistently outperforms other interpretable models -- including CART, Lasso, and Node Harvest -- in predictive accuracy, while matching the accuracy of Random Forest and offering substantial gains in both accuracy and interpretability over M5', a well-established model that is conceptually related.
format Preprint
id arxiv_https___arxiv_org_abs_2506_15791
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle TRUST: Transparent, Robust and Ultra-Sparse Trees
Dorador, Albert
Methodology
Artificial Intelligence
Machine Learning
Piecewise-constant regression trees remain popular for their interpretability, yet often lag behind black-box models like Random Forest in predictive accuracy. In this work, we introduce TRUST (Transparent, Robust, and Ultra-Sparse Trees), a novel regression tree model that combines the accuracy of Random Forests with the interpretability of shallow decision trees and sparse linear models. TRUST further enhances transparency by leveraging Large Language Models to generate tailored, user-friendly explanations. Extensive validation on synthetic and real-world benchmark datasets demonstrates that TRUST consistently outperforms other interpretable models -- including CART, Lasso, and Node Harvest -- in predictive accuracy, while matching the accuracy of Random Forest and offering substantial gains in both accuracy and interpretability over M5', a well-established model that is conceptually related.
title TRUST: Transparent, Robust and Ultra-Sparse Trees
topic Methodology
Artificial Intelligence
Machine Learning
url https://arxiv.org/abs/2506.15791