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Space Decomposition in Data Mining: A Clustering Approach

  • Lior Rokach
  • Oded Maimon
  • Inbal Lavi
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2871)

Abstract

Data mining algorithms aim at searching interesting patterns in large amount of data in manageable complexity and good accuracy. Decomposition methods are used to improve both criteria. As opposed to most decomposition methods, that partition the dataset via sampling, this paper presents an accuracy-oriented method that partitions the instance space into mutually exclusive subsets using K-means clustering algorithm. After employing the basic divide-and-induce method on several datasets with different classifiers, its error rate is compared to that of the basic learning algorithm. An analysis of the results shows that the proposed method is well suited for datasets of numeric input attributes and that its performance is influenced by the dataset size and its homogeneity. Finally, a homogeneity threshold is developed, that can be used for deciding whether to decompose the data set or not.

Keywords

Data Mining Cluster Center Unlabeled Data Validity Index Data Mining Algorithm 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • Lior Rokach
    • 1
  • Oded Maimon
    • 1
  • Inbal Lavi
    • 1
  1. 1.Department of industrial engineeringTel-Aviv UniversityTel AvivIsrael

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