Conditional Granger causality of diffusion processes

Benjamin Wahl (), Ulrike Feudel, Jaroslav Hlinka, Matthias Wächter, Joachim Peinke and Jan A. Freund
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Benjamin Wahl: Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg
Ulrike Feudel: Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg
Jaroslav Hlinka: Institute of Computer Science, Academy of Sciences of the Czech Republic
Matthias Wächter: ForWind-Center for Wind Energy Research, Institute of Physics, University of Oldenburg
Joachim Peinke: ForWind-Center for Wind Energy Research, Institute of Physics, University of Oldenburg
Jan A. Freund: Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg

The European Physical Journal B: Condensed Matter and Complex Systems, 2017, vol. 90, issue 10, 1-8

Abstract: Abstract The statistical concept of Granger causality is defined by prediction improvement, i.e. the causing time series contains unique information about the future of the caused one. Recently we proposed extending this concept to bivariate diffusion processes by defining Granger causality for each point of the state space as the Granger causality of a process obtained by local linearisation. This provides a Granger causality map, well-defined at least in the vicinity of stable fixed points of the deterministic part of the dynamics. This extension has convenient properties, but carries several important limitations. In the current paper we show how the Granger causality of diffusion processes can be further generalized, incorporating in particular the concept of conditional causality. Moreover, we demonstrate the application potential to systems with a more complex attractor structure such as limit cycles or bistability of fixed points.

Keywords: Statistical; and; Nonlinear; Physics (search for similar items in EconPapers)
Date: 2017
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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DOI: 10.1140/epjb/e2017-80015-x

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