Time Series Forecasting With Orthogonal Endocrine Neural Network Based on Postsynaptic Potentials

Author:

Milovanović Miroslav1,Antić Dragan2,Milojković Marko3,Nikolić Saša S.3,Spasić Miodrag1,Perić Staniša1

Affiliation:

1. Faculty of Electronic Engineering, Department of Control Systems, University of Niš, Aleksandra Medvedeva 14, Niš 18000, Republic of Serbia e-mail:

2. Professor Faculty of Electronic Engineering, Department of Control Systems, University of Niš, Aleksandra Medvedeva 14, Niš 18000, Republic of Serbia e-mail:

3. Assistant Professor Faculty of Electronic Engineering, Department of Control Systems, University of Niš, Aleksandra Medvedeva 14, Niš 18000, Republic of Serbia e-mail:

Abstract

This paper presents a new type of endocrine neural network (ENN). ENN utilizes artificial glands which enable the network to be adaptive to external disturbances. Sensitivity is controlled by the hormone decay rate and the value of the sensitivity parameter. The network presented in this paper is improved by making the sensitivity parameter self-tuning and implementing orthogonal activation functions inside the network structure. Automatic tuning is performed on the basis of the biological principle of postsynaptic potentials by implementing inhibitory and excitatory glands inside the standard backpropagation learning algorithm of developed orthogonal ENN. These additional network functionalities enable extra sensitivity to external conditions and an additional network feature of activation sharpening. The network was tested on real-time series of experimental data with a purpose to forecast exchange rate of the three widely used international currencies.

Publisher

ASME International

Subject

Computer Science Applications,Mechanical Engineering,Instrumentation,Information Systems,Control and Systems Engineering

Reference31 articles.

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4. Yu, L., Wang, S., and Lai, K., 2005, “Adaptive Smoothing Neural Networks in Foreign Exchange Rate Forecasting,” 5th International Conference, Computational Science—ICCS 2005, Atlanta, GA, May 22–25, pp. 523–530.10.1007/11428862_72

5. Chen, A., Hsu, Y., and Hu, K., 2008, “A Hybrid Forecasting Model for Foreign Exchange Rate Based on a Multi-Neural Network,” 4th International Conference on Natural Computation, ICNC, Oct. 18–20, Vol. 5, pp. 293–298.10.1109/ICNC.2008.298

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