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Conceptual K-Means Algorithm Based on Complex Features

  • I. O. Ayaquica-Martínez
  • J. Fco. Martínez-Trinidad
  • J. Ariel Carrasco-Ochoa
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4225)

Abstract

The k-means algorithm is the most studied and used tool for solving the clustering problem when the number of clusters is known a priori. Nowadays, there is only one conceptual version of this algorithm, the conceptual k-means algorithm. One characteristic of this algorithm is the use of generalization lattices, which define relationships among the feature values. However, for many applications, it is difficult to determine the best generalization lattices; moreover there are not automatic methods to build the lattices, thus this task must be done by the specialist of the area in which we want to solve the problem. In addition, this algorithm does not work with missing data. For these reasons, in this paper, a new conceptual k-means algorithm that does not use generalization lattices to build the concepts and allows working with missing data is proposed. We use complex features for generating the concepts. The complex features are subsets of features with associated values that characterize objects of a cluster and at the same time not characterize objects from other clusters. Some experimental results obtained by our algorithm are shown and they are compared against the results obtained by the conceptual k-means algorithm.

Keywords

Genetic Algorithm Cluster Problem Complex Feature Cluster Phase Conceptual Cluster 
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 2006

Authors and Affiliations

  • I. O. Ayaquica-Martínez
    • 1
  • J. Fco. Martínez-Trinidad
    • 1
  • J. Ariel Carrasco-Ochoa
    • 1
  1. 1.Optics and Electronics, Computer Science DepartmentNational Institute of AstrophysicsSanta María Tonantzintla, PueblaMexico

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