Accuracy, comprehensibility and completeness evaluation of a fuzzy expert system

  • Authors:
  • Phayung Meesad;Gary G. Yen

  • Affiliations:
  • King Mongkut's Institute of Technology, NB Department of Electrical Engineering, 1518 Pibolsongkram Rd., Bangkok 10800, Thailand;Oklahoma State University, School of Electrical and Computer Engineering, 202 Engineering South, Stillwater, OK

  • Venue:
  • International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems
  • Year:
  • 2003

Quantified Score

Hi-index 0.00

Visualization

Abstract

Using optimization tools such as genetic algorithms to construct a fuzzy expert system (FES) focusing only on its accuracy without considering the comprehensibility may not result in a system that produces understandable expressions. To exploit the transparency characteristics of FES for reasoning in a higher-level knowledge representation, a FES should provide high comprehensibility while preserving its accuracy. The completeness of fuzzy sets and rule structures should also be considered to guarantee that every data point has a response output. This paper proposes some quantitative measures for a FES to determine the degree of the accuracy, the comprehensibility of the fuzzy sets, and the completeness of fuzzy rule structure. These quantitative measures are then used as a fitness function for a genetic algorithm in optimally refining a FES.