A filter model for feature subset selection based on genetic algorithm

Authors:
M. E. ElAlami
Affiliations:
Department of Computer Science, Mansoura University, Mansoura 35111, Egypt
Venue:
Knowledge-Based Systems
Year:
2009

Citing 12
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Abstract

This paper describes a novel feature subset selection algorithm, which utilizes a genetic algorithm (GA) to optimize the output nodes of trained artificial neural network (ANN). The new algorithm does not depend on the ANN training algorithms or modify the training results. The two groups of weights between input-hidden and hidden-output layers are extracted after training the ANN on a given database. The general formula for each output node (class) of ANN is then generated. This formula depends only on input features because the two groups of weights are constant. This dependency is represented by a non-linear exponential function. The GA is involved to find the optimal relevant features, which maximize the output function for each class. The dominant features in all classes are the features subset to be selected from the input feature group.