Parameter Learning in Object-Oriented Bayesian Networks

  • Authors:
  • Helge Langseth;Olav Bangsø

  • Affiliations:
  • Department of Mathematical Sciences, Norwegian University of Science and Technology, N-7491 Trondheim, Norway E-mail: helgel@math.ntnu.no;Department of Computer Science, Aalborg University, Fredrik Bajers Vej 7E, DK-9220 Aalborg Øst, Denmark E-mail: bangsy@cs.auc.dk

  • Venue:
  • Annals of Mathematics and Artificial Intelligence
  • Year:
  • 2001

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Abstract

This paper describes a method for parameter learning in Object-Oriented Bayesian Networks (OOBNs). We propose a methodology for learning parameters in OOBNs, and prove that maintaining the object orientation imposed by the prior model will increase the learning speed in object-oriented domains. We also propose a method to efficiently estimate the probability parameters in domains that are inot strictly object oriented. Finally, we attack type uncertainty, a special case of model uncertainty typical to object-oriented domains.