On condensed representations of constrained frequent patterns

  • Authors:
  • Francesco Bonchi;Claudio Lucchese

  • Affiliations:
  • KDD Laboratory, ISTI Area della Ricerca C.N.R. di Pisa, Pisa, Italy;HPC Laboratory, ISTI Area della Ricerca C.N.R. di Pisa, Pisa, Italy

  • Venue:
  • Knowledge and Information Systems
  • Year:
  • 2006

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Abstract

Constrained frequent patterns and closed frequent patterns are two paradigms aimed at reducing the set of extracted patterns to a smaller, more interesting, subset. Although a lot of work has been done with both these paradigms, there is still confusion around the mining problem obtained by joining closed and constrained frequent patterns in a unique framework. In this paper, we shed light on this problem by providing a formal definition and a thorough characterisation. We also study computational issues and show how to combine the most recent results in both paradigms, providing a very efficient algorithm that exploits the two requirements (satisfying constraints and being closed) together at mining time in order to reduce the computation as much as possible.