Analytical results for uncertainty propagation through trained machine learning regression models

• URL: http://arxiv.org/abs/2404.11224v2
• Date: Wed, 8 May 2024 15:50:31 GMT
• Title: Analytical results for uncertainty propagation through trained machine learning regression models
• Authors: Andrew Thompson,
• Abstract summary: This paper addresses the challenge of uncertainty propagation through trained/fixed machine learning (ML) regression models. We present numerical experiments in which we validate our methods and compare them with a Monte Carlo approach from a computational efficiency point of view.
• Score: 0.10878040851637999
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Machine learning (ML) models are increasingly being used in metrology applications. However, for ML models to be credible in a metrology context they should be accompanied by principled uncertainty quantification. This paper addresses the challenge of uncertainty propagation through trained/fixed machine learning (ML) regression models. Analytical expressions for the mean and variance of the model output are obtained/presented for certain input data distributions and for a variety of ML models. Our results cover several popular ML models including linear regression, penalised linear regression, kernel ridge regression, Gaussian Processes (GPs), support vector machines (SVMs) and relevance vector machines (RVMs). We present numerical experiments in which we validate our methods and compare them with a Monte Carlo approach from a computational efficiency point of view. We also illustrate our methods in the context of a metrology application, namely modelling the state-of-health of lithium-ion cells based upon Electrical Impedance Spectroscopy (EIS) data

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