Wavelets in the Analysis of Autoregressive Conditional Heteroskedasticity (ARCH) Models Using Neural Network
American Journal of Applied Mathematics
Volume 4, Issue 2, April 2016, Pages: 92-98
Received: Feb. 29, 2016; Accepted: Mar. 15, 2016; Published: Mar. 30, 2016
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Ataulla , Department of Mathematics, HKBK College of Engineering, Bangalore, India
Mohammed Yunus, Department of Mechanical Engineering, Umm Al-Qura University, College of Engineering and Islamic Architecture, Makkah, Kingdom of Saudi Arabia
Mohammad S. Alsoufi, Department of Mechanical Engineering, Umm Al-Qura University, College of Engineering and Islamic Architecture, Makkah, Kingdom of Saudi Arabia
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In the paper, proposed a new method for the time frequency signal analysis, speech processing and other signal processing applications. Stationary signal components can be analyzed by a powerful tool called as Fourier transform. But it is fizzled for analysing the non-stationary signal whereas wavelet transform allows the components of a non-stationary signal to be analyzed. It is the improved version of Fourier transform. Wavelets allow complex information such as music, speech, images and patterns to be decomposed into elementary forms at different positions and scales and subsequently reconstructed with high precision. Here, for extracting the best features of non-stationary signal we use discrete wavelet transform. This can be decomposed into two components named as high frequency component and low frequency component. The decomposed output component is sent for regression analysis. This is done by passing through ARCH model which can characterize and model observed time series. An ARCH time series is the one in which the variance of the error in a period depends on upon size of the squared error in the previous period i.e. if a large error occurs in one period, the variance of the error in the next period will be even larger. The performance of the ARCH will be improved by predicting its co-efficient or cofactor using an artificial technique. The artificial technique presented in this paper is neural network, which is capable of handling sophisticated computations similar to the human brain. The proposed model algorithm will be implemented in MATLAB and the output performances are estimated.
Signal Analysis, Discrete Wavelet Transform, Frequency Decomposition, Regression Analysis, ARCH Model, Neural Network
To cite this article
Ataulla , Mohammed Yunus, Mohammad S. Alsoufi, Wavelets in the Analysis of Autoregressive Conditional Heteroskedasticity (ARCH) Models Using Neural Network, American Journal of Applied Mathematics. Vol. 4, No. 2, 2016, pp. 92-98. doi: 10.11648/j.ajam.20160402.14
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