A particular challenge for disease progression modeling is the heterogeneity of a disease and its manifestations in the patients. Existing approaches often assume the presence of a single disease progression characteristics which is unlikely for neurodegenerative disorders such as Parkinson's disease. In this paper, we propose a hierarchical time-series model that can discover multiple disease progression dynamics. The proposed model is an extension of an input-output hidden Markov model that takes into account the clinical assessments of patients' health status and prescribed medications. We illustrate the benefits of our model using a synthetically generated dataset and a real-world longitudinal dataset for Parkinson's disease.
@article{arxiv.2207.11846,
title = {Mixture of Input-Output Hidden Markov Models for Heterogeneous Disease Progression Modeling},
author = {Taha Ceritli and Andrew P. Creagh and David A. Clifton},
journal= {arXiv preprint arXiv:2207.11846},
year = {2022}
}