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Entropy 2018, 20(4), 290; https://doi.org/10.3390/e20040290

Optimization of CNN through Novel Training Strategy for Visual Classification Problems

1
Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
2
Faculty of Information Technology, Beijing University of Technology, Beijing 100022, China
3
Department of Electrical Engineering, Sarhad University of Science and IT, Peshawar 25000, Pakistan
4
School of Computer Science and Electronic Engineering, University of Essex, Colchester CO4 3SQ, UK
5
Department of Information Engineering and Computer Science, Feng Chia University, Taichung City 407, Taiwan
*
Author to whom correspondence should be addressed.
Received: 31 January 2018 / Revised: 30 March 2018 / Accepted: 14 April 2018 / Published: 17 April 2018
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Abstract

The convolution neural network (CNN) has achieved state-of-the-art performance in many computer vision applications e.g., classification, recognition, detection, etc. However, the global optimization of CNN training is still a problem. Fast classification and training play a key role in the development of the CNN. We hypothesize that the smoother and optimized the training of a CNN goes, the more efficient the end result becomes. Therefore, in this paper, we implement a modified resilient backpropagation (MRPROP) algorithm to improve the convergence and efficiency of CNN training. Particularly, a tolerant band is introduced to avoid network overtraining, which is incorporated with the global best concept for weight updating criteria to allow the training algorithm of the CNN to optimize its weights more swiftly and precisely. For comparison, we present and analyze four different training algorithms for CNN along with MRPROP, i.e., resilient backpropagation (RPROP), Levenberg–Marquardt (LM), conjugate gradient (CG), and gradient descent with momentum (GDM). Experimental results showcase the merit of the proposed approach on a public face and skin dataset. View Full-Text
Keywords: CNN optimization; image classification; MRPROP; training algorithm CNN optimization; image classification; MRPROP; training algorithm
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Rehman, S.U.; Tu, S.; Rehman, O.U.; Huang, Y.; Magurawalage, C.M.S.; Chang, C.-C. Optimization of CNN through Novel Training Strategy for Visual Classification Problems. Entropy 2018, 20, 290.

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