GenMax: An Efficient Algorithm for Mining Maximal Frequent Itemsets

  • Authors:
  • Karam Gouda;Mohammed J. Zaki

  • Affiliations:
  • Department of Mathematics, Faculty of Science, Benha, Egypt;Computer Science Department, Rensselaer Polytechnic Institute, Troy, USA 12180

  • Venue:
  • Data Mining and Knowledge Discovery
  • Year:
  • 2005

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Abstract

We present GenMax, a backtrack search based algorithm for mining maximal frequent itemsets. GenMax uses a number of optimizations to prune the search space. It uses a novel technique called progressive focusing to perform maximality checking, and diffset propagation to perform fast frequency computation. Systematic experimental comparison with previous work indicates that different methods have varying strengths and weaknesses based on dataset characteristics. We found GenMax to be a highly efficient method to mine the exact set of maximal patterns.