Incremental mining of closed inter-transaction itemsets over data stream sliding windows

  • Authors:
  • Shih-Chuan Chiu;Hua-Fu Li;Jiun-Long Huang;Hsin-Han You

  • Affiliations:
  • Department of Computer Science, National Chiao TungUniversity, Hsinchu 300, Taiwan, ROC;Department of Information Management, Kainan University,Taoyuan 338, Taiwan, ROC;Department of Computer Science, National Chiao TungUniversity, Hsinchu 300, Taiwan, ROC;Department of Computer Science, National Chiao TungUniversity, Hsinchu 300, Taiwan, ROC

  • Venue:
  • Journal of Information Science
  • Year:
  • 2011

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Abstract

Mining inter-transaction association rules is one of the most interesting issues in data mining research. However, in a data stream environment the previous approaches are unable to find the result of the new-incoming data and the original database without re-computing the whole database. In this paper, we propose an incremental mining algorithm, called DSM-CITI (Data Stream Mining for Closed Inter-Transaction Itemsets), for discovering the set of all frequent inter-transaction itemsets from data streams. In the framework of DSM-CITI, a new in-memory summary data structure, ITP-tree, is developed to maintain frequent inter-transaction itemsets. Moreover, algorithm DSM-CITI is able to construct ITP-tree incrementally and uses the property to avoid unnecessary updates. Experimental studies show that the proposed algorithm is efficient and scalable for mining frequent inter-transaction itemsets over stream sliding windows.