ICANN ’93 pp 59-62 | Cite as

Improving Categorization with CALM Maps

  • Ed Lebert
  • R. Hans Phaf
Conference paper


The Categorizing And Learning Module (CALM) represents different patterns on different nodes through a competitive learning procedure. We study an extension of CALM that enforces a topological structure on the representations. The main difference with Kohonen’s self-organizing feature map is that no external regulating mechanisms are needed to learn a stable map. Simulations show that this CALM Map, in comparison to the standard CALM module, improves categorization because the stretching property of CALM Maps enables a continuous process of separation, whereas CALM will eventually commit itself to a once obtained categorization.


Topo Erwin Hemel 


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Copyright information

© Springer-Verlag London Limited 1993

Authors and Affiliations

  • Ed Lebert
    • 1
  • R. Hans Phaf
    • 1
  1. 1.Psychonomics DepartmentUniversity of AmsterdamAmsterdamThe Netherlands

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