A Discriminative Event Based Model for Alzheimer’s Disease Progression Modeling

  • Vikram Venkatraghavan
  • Esther E. Bron
  • Wiro J. Niessen
  • Stefan Klein
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 10265)

Abstract

The event-based model (EBM) for data-driven disease progression modeling estimates the sequence in which biomarkers for a disease become abnormal. This helps in understanding the dynamics of disease progression and facilitates early diagnosis by staging patients on a disease progression timeline. Existing EBM methods are all generative in nature. In this work we propose a novel discriminative approach to EBM, which is shown to be more accurate as well as computationally more efficient than existing state-of-the art EBM methods. The method first estimates for each subject an approximate ordering of events, by ranking the posterior probabilities of individual biomarkers being abnormal. Subsequently, the central ordering over all subjects is estimated by fitting a generalized Mallows model to these approximate subject-specific orderings based on a novel probabilistic Kendall’s Tau distance. To evaluate the accuracy, we performed extensive experiments on synthetic data simulating the progression of Alzheimer’s disease. Subsequently, the method was applied to the Alzheimer’s Disease Neuroimaging Initiative (ADNI) data to estimate the central event ordering in the dataset. The experiments benchmark the accuracy of the new model under various conditions and compare it with existing state-of-the-art EBM methods. The results indicate that discriminative EBM could be a simple and elegant approach to disease progression modeling.

Keywords

Mild Cognitive Impairment Gaussian Mixture Model Probability Density Function Dirichlet Process Mixture Discriminative Approach 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

This work is part of the EuroPOND initiative, which is funded by the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 666992. The authors also thank Dr. Jonathan Huang for sharing the implementation of Huang’s EBM and Dr. Alexandra Young for the useful discussions on estimation of biomarker distributions as well as for sharing the implementation of the simulation system for biomarker evolution.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Vikram Venkatraghavan
    • 1
  • Esther E. Bron
    • 1
  • Wiro J. Niessen
    • 1
    • 2
  • Stefan Klein
    • 1
  1. 1.Biomedical Imaging Group Rotterdam, Departments of Medical Informatics and RadiologyErasmus MCRotterdamThe Netherlands
  2. 2.Faculty of Applied SciencesDelft University of TechnologyDelftThe Netherlands

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