Mining Mutually Dependent Ordered Subtrees in Tree Databases

  • Authors:
  • Tomonobu Ozaki;Takenao Ohkawa

  • Affiliations:
  • Organization of Advanced Science and Technology, Kobe University,;Graduate School of Engineering, Kobe University, Kobe, Japan 657-8501

  • Venue:
  • New Frontiers in Applied Data Mining
  • Year:
  • 2009

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Abstract

In this paper, in order to discover significant patterns, we focus on the problem of mining frequent mutually dependent ordered subtrees , i.e. frequent ordered subtrees in which all building blocks are mutually dependent, in tree databases. While three kinds of mutually dependent ordered subtrees are considered based on the building blocks used, we propose efficient breadth-first algorithms for each kind of subtrees. The effectiveness of the proposed framework is assessed through the experiments with synthetic and real world datasets.