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Composition of Self Organizing Maps for Adaptive Mesh Construction on Complex-shaped Domains

Nechaeva, Olga



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Abstract:
In this paper, an important application of Self-Organizing Maps (SOM) to construction of adaptive meshes is considered. It is shown that application of the basic SOM model leads to a number of problems like inaccurate fitting the border of a physical domain, mesh self-crossings, etc. The composite SOM model is proposed which is based on the composition of a number of SOM models interacting in a special way and self-organizing over their own set of input data. A core of the composite SOM model is the colored SOM model with nonadjustable neurons which provides us a technique to control the neuron weights adjustment taking into account the fixed ones and the general layout of the mesh. As a result, the composite SOM model allows us to approximate an arbitrary complex physical domains with well topology preservation.


Keywords: self-organizing maps, adaptive mesh construction, composite SOM model
Institution: Faculty of Technology, Research Groups in Informatics
DDC classification: Data processing, computer science, computer systems

Suggested Citation:
Nechaeva, Olga  (2007)  Composition of Self Organizing Maps for Adaptive Mesh Construction on Complex-shaped Domains.


URL: http://biecoll.ub.uni-bielefeld.de/volltexte/2007/160



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