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An innovation approach to non-Gaussian time series analysis

Published online by Cambridge University Press:  14 July 2016

Tohru Ozaki*
Affiliation:
Institute of Statistical Mathematics, Tokyo
Mitsunori Iino*
Affiliation:
Institute of Statistical Mathematics, Tokyo
*
1 Postal address: Institute of Statistical Mathematics, 4-6-7 Minami-Azabu Minato-Ku, Tokyo 106-8569, Japan. Email: ozaki@ism.ac.jp
2 Email: iino@ypri.co.jp

Abstract

The paper shows that the use of both types of random noise, white noise and Poisson noise, can be justified when using an innovations approach. The historical background for this is sketched, and then several methods of whitening dependent time series are outlined, including a mixture of Gaussian white noise and a compound Poisson process: this appears as a natural extension of the Gaussian white noise model for the prediction errors of a non-Gaussian time series. A statistical method for the identification of non-linear time series models with noise made up of a mixture of Gaussian white noise and a compound Poisson noise is presented. The method is applied to financial time series data (dollar-yen exchange rate data), and illustrated via six models.

Information

Type
Time series analysis
Copyright
Copyright © Applied Probability Trust 2001 

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