Genetic Generalized Additive Models

Fuente: arXiv
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Hauptverfasser: Shankar, Kaaustaaub, Cohen, Kelly
Format: Preprint
Veröffentlicht: 2026
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author Shankar, Kaaustaaub
Cohen, Kelly
author_facet Shankar, Kaaustaaub
Cohen, Kelly
contents Generalized Additive Models (GAMs) balance predictive accuracy and interpretability, but manually configuring their structure is challenging. We propose using the multi-objective genetic algorithm NSGA-II to automatically optimize GAMs, jointly minimizing prediction error (RMSE) and a Complexity Penalty that captures sparsity, smoothness, and uncertainty. Experiments on the California Housing dataset show that NSGA-II discovers GAMs that outperform baseline LinearGAMs in accuracy or match performance with substantially lower complexity. The resulting models are simpler, smoother, and exhibit narrower confidence intervals, enhancing interpretability. This framework provides a general approach for automated optimization of transparent, high-performing models. The code can be found at https://github.com/KaaustaaubShankar/GeneticAdditiveModels.
format Preprint
id arxiv_https___arxiv_org_abs_2602_15877
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Genetic Generalized Additive Models
Shankar, Kaaustaaub
Cohen, Kelly
Machine Learning
Artificial Intelligence
Neural and Evolutionary Computing
Generalized Additive Models (GAMs) balance predictive accuracy and interpretability, but manually configuring their structure is challenging. We propose using the multi-objective genetic algorithm NSGA-II to automatically optimize GAMs, jointly minimizing prediction error (RMSE) and a Complexity Penalty that captures sparsity, smoothness, and uncertainty. Experiments on the California Housing dataset show that NSGA-II discovers GAMs that outperform baseline LinearGAMs in accuracy or match performance with substantially lower complexity. The resulting models are simpler, smoother, and exhibit narrower confidence intervals, enhancing interpretability. This framework provides a general approach for automated optimization of transparent, high-performing models. The code can be found at https://github.com/KaaustaaubShankar/GeneticAdditiveModels.
title Genetic Generalized Additive Models
topic Machine Learning
Artificial Intelligence
Neural and Evolutionary Computing
url https://arxiv.org/abs/2602.15877