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A Parallel Algorithm for Mining onshelf Utility Itemset with Negative Item Values

  

  1. (College of Mathematics and Computer Science, Fuzhou University, Fuzhou 350116, China)
  • Online:2018-04-28 Published:2018-05-02

Abstract: In order to improve the mining efficiency of the onshelf utility itemset mining algorithms with negative item values, the paper proposed a parallel algorithm for mining onshelf utility itemset with negative item values named DTPHoun (distributed TPHoun algorithm). Based on MapReduce,  the algorithm divides the database according to the onshelf time periods. The algorithm transforms the mining work into MapReduce job, the Map phase to mine candidates in database fragments, and the Reduce phase to calculate the onshelf utility values of the candidates in parallel. The experimental results show that the DTPHoun algorithm has a good performance.

Key words: utility itemset mining, onshelf time periods, MapReduce, negative item values

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