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The Effects of Disregarding Test Characteristics in Probabilistic Networks

  • Linda C. van der Gaag
  • C. L. M. Witteman
  • Silja Renooij
  • M. Egmont-Petersen
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2101)

Abstract

In most medical disciplines, the results from diagnostic tests are not unequivocal. To capture the uncertainties in test results, the notions of sensitivity and specificity of diagnostic tests have been introduced. Although the importance of taking these test characteristics into account in medical reasoning is stressed throughout the literature, they are often not modelled explicitly in real-life probabilistic networks. In this paper, we study the effects that disregarding the characteristics of diagnostic tests can have on the performance of a probabilistic network. We feel that the effects that we observed in a real-life network for the staging of oesophageal cancer, are likely to be found in networks for other applications in medicine as well.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • Linda C. van der Gaag
    • 1
  • C. L. M. Witteman
    • 1
  • Silja Renooij
    • 1
  • M. Egmont-Petersen
    • 1
  1. 1.Institute of Information and Computing SciencesUtrecht UniversityTB UtrechtThe Netherlands

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