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Neural-Based Learning Classifier Systems

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4 Author(s)
Hai H. Dam ; Univ. of New South Wales, Canberra ; Hussein A. Abbass ; Chris Lokan ; Xin Yao

UCS is a supervised learning classifier system that was introduced in 2003 for classification in data mining tasks. The representation of a rule in UCS as a univariate classification rule is straightforward for a human to understand. However, the system may require a large number of rules to cover the input space. Artificial neural networks (NNs), on the other hand, normally provide a more compact representation. However, it is not a straightforward task to understand the network. In this paper, we propose a novel way to incorporate NNs into UCS. The approach offers a good compromise between compactness, expressiveness, and accuracy. By using a simple artificial NN as the classifier's action, we obtain a more compact population size, better generalization, and the same or better accuracy while maintaining a reasonable level of expressiveness. We also apply negative correlation learning (NCL) during the training of the resultant NN ensemble. NCL is shown to improve the generalization of the ensemble.

Published in:

IEEE Transactions on Knowledge and Data Engineering  (Volume:20 ,  Issue: 1 )