Mitotic HEp-2 Cells Recognition under Class Skew

  • Gennaro Percannella
  • Paolo Soda
  • Mario Vento
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6979)

Abstract

Indirect immunofluorescence (IIF) is the recommended method to diagnose the presence of antinuclear autoantibodies in patient serum. A main step of the diagnostic procedure requires to detect mitotic cells in the well under examination. However, such cells rarely occur in comparison to other cells and, hence, traditional recognition algorithms fail in this task since they cannot cope with large differences between the number of samples in each class, resulting in a low predictive accuracy over the minority class. In this paper we present a system for mitotic cells recognition based on multiobjective optimisation, which is able to handle their low a priori probability. It chooses between the output of a classifier trained on the original skewed distribution and the output of a classifier trained according to a learning method addressing the course of imbalanced data. This choice is driven by a parameter whose value maximises, on a validation set, two objective functions, i.e. the global accuracy and the accuracies for each class. The approach has been evaluated on an annotated dataset of mitotic cells and successfully compared to five learning methods applying four different classification paradigms.

Keywords

Support Vector Machine Multiobjective Optimisation Mitotic Cell Minority Class Class Imbalance 
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.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Gennaro Percannella
    • 1
  • Paolo Soda
    • 2
  • Mario Vento
    • 1
  1. 1.Dipartimento di Ingegneria dell’Informazione ed Ingegneria ElettricaUniversità di SalernoItaly
  2. 2.Facoltà di IngegneriaUniversità Campus Bio-Medico di RomaItaly

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