Visualization of Decision Tree State for the Classification of Parkinson's Disease

Authors

  • David Williams Johann Bernoulli Institute for Mathematics and Computer Science, University of Groningen, The Netherlands
  • Deborah Mudali Johann Bernoulli Institute for Mathematics and Computer Science, University of Groningen, The Netherlands
  • Hugo Buddelmeijer Kapteyn Astronomical Institute, University of Groningen, The Netherlands
  • Parisa Noorishad Kapteyn Astronomical Institute, University of Groningen, The Netherlands and Netherlands eScience Center, Amsterdam, The Netherlands
  • Sanne Meles Neuroimaging Center, University Medical Center Groningen, The Netherlands
  • Remco Renken Neuroimaging Center, University Medical Center Groningen, The Netherlands
  • Nico Leenders Department of Neurology, University Medical Center Groningen, The Netherlands
  • Edwin Valentijn Kapteyn Astronomical Institute, University of Groningen, The Netherlands
  • Jos Roerdink Johann Bernoulli Institute for Mathematics and Computer Science, University of Groningen, The Netherlands

DOI:

https://doi.org/10.14738/jbemi.33.1858

Keywords:

Decision tree, Visualization, Medical imaging, Parkinson's Disease, Computer aided diagnosis,

Abstract

Decision trees have been shown to be effective at classifying subjects with Parkinson's disease when provided with features (subject scores) derived from FDG-PET data. Such subject scores have strong discriminative power but are not intuitive to understand. We therefore augment each decision node with thumbnails of the principal component (PC) images from which the subject scores are computed, and also provide labeled scatter plots of the distribution of scores. These plots allow the progress of individual subjects to be traced through the tree and enable the user to focus on complex or unexpected classifications. In addition, we present a visual representation of a typical brain activity pattern arriving at each leaf node, and show how this can be compared to a known reference to validate the behaviour of the tree.

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Published

2016-07-24

How to Cite

Williams, D., Mudali, D., Buddelmeijer, H., Noorishad, P., Meles, S., Renken, R., Leenders, N., Valentijn, E., & Roerdink, J. (2016). Visualization of Decision Tree State for the Classification of Parkinson’s Disease. British Journal of Healthcare and Medical Research, 3(3), 25. https://doi.org/10.14738/jbemi.33.1858

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