Dhamala, Mukeshwar and Rangarajan, Govindan and Ding, Mingzhou (2008) Estimating granger causality from fourier and wavelet transforms of time series data. In: Physical Review Letters, 100 (1). 018701-1-018701-4.
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Experiments in many fields of science and engineering yield data in the form of time series. The Fourier and wavelet transform-based nonparametric methods are used widely to study the spectral characteristics of these time series data. Here, we extend the framework of nonparametric spectral methods to include the estimation of Granger causality spectra for assessing directional influences. We illustrate the utility of the proposed methods using synthetic data from network models consisting of interacting dynamical systems.
|Item Type:||Journal Article|
|Additional Information:||This article copyright belongs to The American Physical Society.|
|Department/Centre:||Division of Physical & Mathematical Sciences > Mathematics|
|Date Deposited:||19 Feb 2008|
|Last Modified:||19 Sep 2010 04:42|
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