Integrative Windowing

  • Authors:
  • Johannes Fürnkranz

  • Affiliations:
  • School of computer science, Carnegie Mellon University, Pittsburgh, PA

  • Venue:
  • Journal of Artificial Intelligence Research
  • Year:
  • 1998

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Abstract

In this paper we re-investigate windowing for rule learning algorithms. We show that, contrary to previous results for decision tree learning, windowing can in fact achieve significant run-time gains in noise-free domains and explain the different behaviour of rule learning algorithms by the fact that they learn each rule independently. The main contribution of this paper is integrative windowing, a new type of algorithm that further exploits this property by integrating good rules into the final theory right after they have been discovered. Thus it avoids re-learning these rules in subsequent iterations of the windowing process. Experimental evidence in a variety of noise-free domains shows that integrative windowing can in fact achieve substantial run-time gains. Furthermore, we discuss the problem of noise in windowing and present an algorithm that is able to archieve run-time gains in a set of experiments in a simple domain with artificial noise.