Improvement of neural network classifier using floating centroids

Authors:
Lin Wang;Bo Yang;Yuehui Chen;Ajith Abraham;Hongwei Sun;Zhenxiang Chen;Haiyang Wang
Affiliations:
University of Jinan, Shandong Provincial Key Laboratory of Network based Intelligent Computing, 250022, Jinan, China and Shandong University, School of Computer Science and Technology, 250101, Jin ...;University of Jinan, Shandong Provincial Key Laboratory of Network based Intelligent Computing, 250022, Jinan, China;University of Jinan, Shandong Provincial Key Laboratory of Network based Intelligent Computing, 250022, Jinan, China;VSB-Technical University of Ostrava, Faculty of Electrical Engineering and Computer Science, Ostrava, Czech Republic and Scientific Network for Innovation and Research Excellence, Machine Intellig ...;University of Jinan, School of Science, 250022, Jinan, China;University of Jinan, Shandong Provincial Key Laboratory of Network based Intelligent Computing, 250022, Jinan, China;Shandong University, School of Computer Science and Technology, 250101, Jinan, China
Venue:
Knowledge and Information Systems
Year:
2012

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Abstract

This paper presents a novel technique—Floating Centroids Method (FCM) designed to improve the performance of a conventional neural network classifier. Partition space is a space that is used to categorize data sample after sample is mapped by neural network. In the partition space, the centroid is a point, which denotes the center of a class. In a conventional neural network classifier, position of centroids and the relationship between centroids and classes are set manually. In addition, number of centroids is fixed with reference to the number of classes. The proposed approach introduces many floating centroids, which are spread throughout the partition space and obtained by using K-Means algorithm. Moreover, different classes labels are attached to these centroids automatically. A sample is predicted as a certain class if the closest centroid of its corresponding mapped point is labeled by this class. Experimental results illustrate that the proposed method has favorable performance especially with respect to the training accuracy, generalization accuracy, and average F-measures.