Enhancing SWF for incremental association mining by itemset maintenance

  • Authors:
  • Chia-Hui Chang;Shi-Hsan Yang

  • Affiliations:
  • Department of Computer Science and Information Engineering, National Central University, Chung-Li, Taiwan;Department of Computer Science and Information Engineering, National Central University, Chung-Li, Taiwan

  • Venue:
  • PAKDD'03 Proceedings of the 7th Pacific-Asia conference on Advances in knowledge discovery and data mining
  • Year:
  • 2003

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Abstract

Incremental association mining refers to the maintenance and utilization of the knowledge discovered in the previous mining operations for later association mining. Sliding window filtering (SWF) is a technique proposed to filter false candidate 2-itemsets by segmenting a transaction database into partitions. In this paper, we extend SWF by incorporating previously discovered information and propose two algorithms to boost the performance for incremental mining. The first algorithm FI_SWF (SWF with Frequent Itemset) reuses the frequent itemsets of previous mining task to reduce the number of new candidate itemsets that have to be checked. The second algorithm CI_SWF (SWF with Candidate Itemset) reuses the candidate itemsets from the previous mining task. Experiments show that the new proposed algorithms are significantly faster than SWF.