Projection Pursuit Constructive Neural Networks Based on Quality of Projected Clusters

Authors:
Marek Grochowski;Włodzisław Duch
Affiliations:
Department of Informatics, Nicolaus Copernicus University, Toruń, Poland;Department of Informatics, Nicolaus Copernicus University, Toruń, Poland
Venue:
ICANN '08 Proceedings of the 18th international conference on Artificial Neural Networks, Part II
Year:
2008

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Abstract

Linear projection pursuit index measuring quality of projected clusters (QPC) is used to discover non-local clusters in high-dimensional multiclass data, reduce dimensionality, select features, visualize and classify data. Constructive neural networks that optimize the QPC index are able to discover simplest models of complex data, solving problems that standard networks based on error minimization are not able to handle. Tests on problems with complex Boolean logic, and tests on real world datasets show high efficiency of this approach.