Rough-fuzzy MLP: modular evolution, rule generation, and evaluation

A methodology is described for evolving a Rough-fuzzy multi layer perceptron with modular concept using a genetic algorithm to obtain a structured network suitable for both classification and rule extraction. The modular concept, based on "divide and conquer" strategy, provides accelerated...

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Veröffentlicht in:IEEE transactions on knowledge and data engineering Jg. 15; H. 1; S. 14 - 25
Hauptverfasser: Pal, S.K., Mitra, S., Mitra, P.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York IEEE 01.01.2003
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:
Acceleration
Algorithms
Artificial neural networks
Computer networks
Confusion
Data mining
Extraction
Fuzzy
Fuzzy sets
Genetic algorithms
Knowledge base
Large-scale systems
Modular
Networks
Neural networks
Rough sets
Uncertainty
ISSN:1041-4347, 1558-2191
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Zusammenfassung:A methodology is described for evolving a Rough-fuzzy multi layer perceptron with modular concept using a genetic algorithm to obtain a structured network suitable for both classification and rule extraction. The modular concept, based on "divide and conquer" strategy, provides accelerated training and a compact network suitable for generating a minimum number of rules with high certainty values. The concept of variable mutation operator is introduced for preserving the localized structure of the constituting knowledge-based subnetworks, while they are integrated and evolved. Rough set dependency rules are generated directly from the real valued attribute table containing fuzzy membership values. Two new indices viz., "certainty" and "confusion" in a decision are defined for evaluating quantitatively the quality of rules. The effectiveness of the model and the rule extraction algorithm is extensively demonstrated through experiments alongwith comparisons.
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ISSN:1041-4347
1558-2191
DOI:10.1109/TKDE.2003.1161579