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Mining fuzzy sequential patterns from quantitative transactions

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Abstract

Many researchers in database and machine learning fields are primarily interested in data mining because it offers opportunities to discover useful information and important relevant patterns in large databases. Most previous studies have shown how binary valued transaction data may be handled. Transaction data in real-world applications usually consist of quantitative values, so designing a sophisticated data-mining algorithm able to deal with various types of data presents a challenge to workers in this research field. In the past, we proposed a fuzzy data-mining algorithm to find association rules. Since sequential patterns are also very important for real-world applications, this paper thus focuses on finding fuzzy sequential patterns from quantitative data. A new mining algorithm is proposed, which integrates the fuzzy-set concepts and the AprioriAll algorithm. It first transforms quantitative values in transactions into linguistic terms, then filters them to find sequential patterns by modifying the AprioriAll mining algorithm. Each quantitative item uses only the linguistic term with the maximum cardinality in later mining processes, thus making the number of fuzzy regions to be processed the same as the number of the original items. The patterns mined out thus exhibit the sequential quantitative regularity in databases and can be used to provide some suggestions to appropriate supervisors.

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Authors and Affiliations

  1. Department of Electrical Engineering, National University of Kaohsiung, 811, Kaohsiung, ROC, Taiwan

    Tzung-Pei Hong

  2. Chunghwa Telecom Lab, 320, Taoyuan, ROC, Taiwan

    Kuei-Ying Lin

  3. New York Institute of Technology, New York, USA

    Shyue-Liang Wang

Authors
  1. Tzung-Pei Hong
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  2. Kuei-Ying Lin
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  3. Shyue-Liang Wang
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Correspondence to Tzung-Pei Hong.

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Hong, TP., Lin, KY. & Wang, SL. Mining fuzzy sequential patterns from quantitative transactions. Soft Comput 10, 925–932 (2006). https://doi.org/10.1007/s00500-005-0018-6

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