Novel Approaches to Probabilistic Neural Networks Through Bagging and Evolutionary Estimating of Prior Probabilities

Authors:
Vasileios L. Georgiou;Philipos D. Alevizos;Michael N. Vrahatis
Affiliations:
Department of Mathematics, Computational Intelligence Laboratory (CI Lab), University of Patras, Patras, Greece 26110 and University of Patras Artificial Intelligence Research Center (UPAIRC), Uni ...;Department of Mathematics, Computational Intelligence Laboratory (CI Lab), University of Patras, Patras, Greece 26110 and University of Patras Artificial Intelligence Research Center (UPAIRC), Uni ...;Department of Mathematics, Computational Intelligence Laboratory (CI Lab), University of Patras, Patras, Greece 26110 and University of Patras Artificial Intelligence Research Center (UPAIRC), Uni ...
Venue:
Neural Processing Letters
Year:
2008

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Abstract

In this contribution, novel approaches are proposed for the improvement of the performance of Probabilistic Neural Networks as well as the recently proposed Evolutionary Probabilistic Neural Networks. The Evolutionary Probabilistic Neural Network's matrix of spread parameters is allowed to have different values in each class of neurons, resulting in a more flexible model that fits the data better and Particle Swarm Optimization is also employed for the estimation of the Probabilistic Neural Networks's prior probabilities of each class. Moreover, the bagging technique is used to create an ensemble of Evolutionary Probabilistic Neural Networks in order to further improve the model's performance. The above approaches have been applied to several well-known and widely used benchmark problems with promising results.