Bayesian inference of a new Mallows model for characterising symptom sequences applied in primary progressive aphasia

Beatrice Taylor, Cameron Shand, Chris J. D. Hardy, Neil Oxtoby
11/22/2023
cs.LG

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Abstract

Machine learning models offer the potential to understand diverse datasets in a data-driven way, powering insights into individual disease experiences and ensuring equitable healthcare. In this study, we explore Bayesian inference for characterising symptom sequences, and the associated modelling challenges. We adapted the Mallows model to account for partial rankings and right-censored data, employing custom MCMC fitting. Our evaluation, encompassing synthetic data and a primary progressive aphasia dataset, highlights the model's efficacy in revealing mean orderings and estimating ranking variance. This holds the potential to enhance clinical comprehension of symptom occurrence. However, our work encounters limitations concerning model scalability and small dataset sizes.

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Cite this paper

@article{taylor2023bayesian,
  title  = {Bayesian inference of a new Mallows model for characterising symptom sequences applied in primary progressive aphasia},
  author = {Beatrice Taylor and Cameron Shand and Chris J. D. Hardy and Neil Oxtoby},
  year   = {2023},
  eprint = {2311.13411},
  archivePrefix = {arXiv},
  url    = {http://arxiv.org/abs/2311.13411v1}
}

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