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http://dx.doi.org/10.5391/JKIIS.2015.25.5.425

A Study on Rotating Object Classification using Deep Neural Networks  

Lee, Yong-Kyu (Department of Computer Science, Yonsei University)
Lee, Yill-Byung (Department of Computer Science, Yonsei University)
Publication Information
Journal of the Korean Institute of Intelligent Systems / v.25, no.5, 2015 , pp. 425-430 More about this Journal
Abstract
This paper is a study to improve the classification efficiency of rotating objects by using deep neural networks to which a deep learning algorithm was applied. For the classification experiment of rotating objects, COIL-20 is used as data and total 3 types of classifiers are compared and analyzed. 3 types of classifiers used in the study include PCA classifier to derive a feature value while reducing the dimension of data by using Principal Component Analysis and classify by using euclidean distance, MLP classifier of the way of reducing the error energy by using error back-propagation algorithm and finally, deep learning applied DBN classifier of the way of increasing the probability of observing learning data through pre-training and reducing the error energy through fine-tuning. In order to identify the structure-specific error rate of the deep neural networks, the experiment is carried out while changing the number of hidden layers and number of hidden neurons. The classifier using DBN showed the lowest error rate. Its structure of deep neural networks with 2 hidden layers showed a high recognition rate by moving parameters to a location helpful for recognition.
Keywords
PCA; MLP; DBN; Pre-training; Deep learning;
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