Skip to main content
Article
Sparse Data in the Evolutionary Generation of Fuzzy Models
Fuzzy Sets and Systems
  • Daniel Spiegel
  • Thomas Sudkamp, Wright State University - Main Campus
Document Type
Article
Publication Date
9-1-2003
Abstract

Fuzzy rule bases have proven to be an effective tool for modeling complex systems and approximating functions. Two approaches, global and local rule generation, have been identified for the evolutionary generation of fuzzy models. In the global approach, the standard method of employing evolutionary techniques in fuzzy rule base generation, the fitness evaluation of a rule base aggregates the performance of the model over the entire space into a single value. A local fitness assessment utilizes the limited scope of a fuzzy rule to evaluate the performance in regions of the input space. Regardless of the method employed, the ability to construct models is inhibited when training data are sparse. In this research, a multi-criteria fitness function is introduced to incorporate a bias towards smoothness into the evolutionary selection process. Several multi-criteria fitness functions, which differ in the extent of the assessment smoothness and the range of its application, are examined. A set of experiments has been performed to demonstrate the effectiveness of the multi-criteria strategies for the evolutionary generation of fuzzy models with sparse data

DOI
10.1016/S0165-0114(03)00136-2
Citation Information
Daniel Spiegel and Thomas Sudkamp. "Sparse Data in the Evolutionary Generation of Fuzzy Models" Fuzzy Sets and Systems Vol. 138 Iss. 2 (2003) p. 363 - 379 ISSN: 0165-0114
Available at: http://works.bepress.com/thomas_sudkamp/92/