Diachronic and synchronic variation in the performance of adaptive machine learning systems: The ethical challenges

Fuente: arXiv
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Autores principales: Hatherley, Joshua, Sparrow, Robert
Formato: Preprint
Publicado: 2025
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author Hatherley, Joshua
Sparrow, Robert
author_facet Hatherley, Joshua
Sparrow, Robert
contents Objectives: Machine learning (ML) has the potential to facilitate "continual learning" in medicine, in which an ML system continues to evolve in response to exposure to new data over time, even after being deployed in a clinical setting. In this paper, we provide a tutorial on the range of ethical issues raised by the use of such "adaptive" ML systems in medicine that have, thus far, been neglected in the literature. Target audience: The target audiences for this tutorial are the developers of machine learning AI systems, healthcare regulators, the broader medical informatics community, and practicing clinicians. Scope: Discussions of adaptive ML systems to date have overlooked the distinction between two sorts of variance that such systems may exhibit -- diachronic evolution (change over time) and synchronic variation (difference between cotemporaneous instantiations of the algorithm at different sites) -- and under-estimated the significance of the latter. We highlight the challenges that diachronic evolution and synchronic variation present for the quality of patient care, informed consent, and equity, and discuss the complex ethical trade-offs involved in the design of such systems.
format Preprint
id arxiv_https___arxiv_org_abs_2504_08861
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Diachronic and synchronic variation in the performance of adaptive machine learning systems: The ethical challenges
Hatherley, Joshua
Sparrow, Robert
Human-Computer Interaction
Artificial Intelligence
Computers and Society
Machine Learning
Objectives: Machine learning (ML) has the potential to facilitate "continual learning" in medicine, in which an ML system continues to evolve in response to exposure to new data over time, even after being deployed in a clinical setting. In this paper, we provide a tutorial on the range of ethical issues raised by the use of such "adaptive" ML systems in medicine that have, thus far, been neglected in the literature. Target audience: The target audiences for this tutorial are the developers of machine learning AI systems, healthcare regulators, the broader medical informatics community, and practicing clinicians. Scope: Discussions of adaptive ML systems to date have overlooked the distinction between two sorts of variance that such systems may exhibit -- diachronic evolution (change over time) and synchronic variation (difference between cotemporaneous instantiations of the algorithm at different sites) -- and under-estimated the significance of the latter. We highlight the challenges that diachronic evolution and synchronic variation present for the quality of patient care, informed consent, and equity, and discuss the complex ethical trade-offs involved in the design of such systems.
title Diachronic and synchronic variation in the performance of adaptive machine learning systems: The ethical challenges
topic Human-Computer Interaction
Artificial Intelligence
Computers and Society
Machine Learning
url https://arxiv.org/abs/2504.08861