Incorporating machine learning into sociological model-building

Quantitative sociologists frequently use simple linear functional forms to estimate associations among variables. However, there is little guidance on whether such simple functional forms correctly reflect the underlying data-generating process. Incorrect model specification can lead to misspecifica...

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Main Author: Verhagen, MD
Format: Journal article
Language:English
Published: SAGE Publications 2024
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author Verhagen, MD
author_facet Verhagen, MD
author_sort Verhagen, MD
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description Quantitative sociologists frequently use simple linear functional forms to estimate associations among variables. However, there is little guidance on whether such simple functional forms correctly reflect the underlying data-generating process. Incorrect model specification can lead to misspecification bias, and a lack of scrutiny of functional forms fosters interference of researcher degrees of freedom in sociological work. In this article, I propose a framework that uses flexible machine learning (ML) methods to provide an indication of the fit potential in a dataset containing the exact same covariates as a researcher’s hypothesized model. When this ML-based fit potential strongly outperforms the researcher’s self-hypothesized functional form, it implies a lack of complexity in the latter. Advances in the field of explainable AI, like the increasingly popular Shapley values, can be used to generate understanding into the ML model such that the researcher’s original functional form can be improved accordingly. The proposed framework aims to use ML beyond solely predictive questions, helping sociologists exploit the potential of ML to identify intricate patterns in data to specify better-fitting, interpretable models. I illustrate the proposed framework using a simulation and real-world examples.
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spelling oxford-uuid:38e00199-5a36-4128-b3ac-78364c078e782024-08-06T11:08:24ZIncorporating machine learning into sociological model-buildingJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:38e00199-5a36-4128-b3ac-78364c078e78EnglishSymplectic ElementsSAGE Publications2024Verhagen, MDQuantitative sociologists frequently use simple linear functional forms to estimate associations among variables. However, there is little guidance on whether such simple functional forms correctly reflect the underlying data-generating process. Incorrect model specification can lead to misspecification bias, and a lack of scrutiny of functional forms fosters interference of researcher degrees of freedom in sociological work. In this article, I propose a framework that uses flexible machine learning (ML) methods to provide an indication of the fit potential in a dataset containing the exact same covariates as a researcher’s hypothesized model. When this ML-based fit potential strongly outperforms the researcher’s self-hypothesized functional form, it implies a lack of complexity in the latter. Advances in the field of explainable AI, like the increasingly popular Shapley values, can be used to generate understanding into the ML model such that the researcher’s original functional form can be improved accordingly. The proposed framework aims to use ML beyond solely predictive questions, helping sociologists exploit the potential of ML to identify intricate patterns in data to specify better-fitting, interpretable models. I illustrate the proposed framework using a simulation and real-world examples.
spellingShingle Verhagen, MD
Incorporating machine learning into sociological model-building
title Incorporating machine learning into sociological model-building
title_full Incorporating machine learning into sociological model-building
title_fullStr Incorporating machine learning into sociological model-building
title_full_unstemmed Incorporating machine learning into sociological model-building
title_short Incorporating machine learning into sociological model-building
title_sort incorporating machine learning into sociological model building
work_keys_str_mv AT verhagenmd incorporatingmachinelearningintosociologicalmodelbuilding