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Novel Feature Selection by Differential Evolution Algorithm

Author(s): Ali Ghareaghaji | Abdolhamid Sohrabi | Azim Rezaei Motlagh | Majid Tavakoli

Journal: Advances in Computer Science : an International Journal
ISSN 2322-5157

Volume: 2;
Issue: 5;
Start page: 63;
Date: 2013;
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Keywords: iris | Feature selection | Differential Evolution Algorithm | optimization

Iris scan biometrics employs the unique characteristic and features of the human iris in order to verify the identity of in individual. In today's world, where terrorist attacks are on the rise employment of infallible security systems is a must. This makes Iris recognition systems unavoidable in emerging security. Authentication the objective function is minimized using Differential Evolutionary (DE) Algorithm where the population vector is encoded using Binary Encoded Decimal to avoid the float number optimization problem. An automatic clustering of the possible values of the Lagrangian multiplier provides a detailed insight of the selected features during the proposed DE based optimization process. The classification accuracy of Support Vector Machine (SVM) is used to measure the performance of the selected features. The proposed algorithm outperforms the existing DE based approaches when tested on IRIS, Wine, Wisconsin Breast Cancer, Sonar and Ionosphere datasets. The same algorithm when applied on gait based people identification, using skeleton data points obtained from Microsoft Kinect sensor, exceeds the previously reported accuracies.
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