Mining Oblique Data with XCS

  • Authors:
  • Stewart W. Wilson

  • Affiliations:
  • -

  • Venue:
  • IWLCS '00 Revised Papers from the Third International Workshop on Advances in Learning Classifier Systems
  • Year:
  • 2000

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Abstract

The classifier system XCS was investigated for data mining applications where the dataset discrimination surface (DS) is generally oblique to the attribute axes. Despite the classifiers' hyper-rectangular predicates, XCS reached 100% performance on synthetic problems with diagonal DS's and, in a train/test experiment, competitive performance on the Wisconsin Breast Cancer dataset. Final classifiers in an extended WBC learning run were interpretable to suggest dependencies on one or a few attributes. For data mining of numeric datasets with partially oblique discrimination surfaces, XCS shows promise from both performance and pattern discovery viewpoints.