Generalization behaviour of alkemic decision trees

  • Authors:
  • K. S. Ng

  • Affiliations:
  • Computer Sciences Laboratory, Research School of Information Sciences and Engineering, The Australian National University

  • Venue:
  • ILP'05 Proceedings of the 15th international conference on Inductive Logic Programming
  • Year:
  • 2005

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Abstract

This paper is concerned with generalization issues for a decision tree learner for structured data called Alkemy. Motivated by error bounds established in statistical learning theory, we study the VC dimensions of some predicate classes defined on sets and multisets – two data-modelling constructs used intensively in the knowledge representation formalism of Alkemy – and from that obtain insights into the (worst-case) generalization behaviour of the learner. The VC dimension results and the techniques used to derive them may be of wider independent interest.