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Partial cross mapping eliminates indirect causal influences

Urheber*innen

Leng,  Siyang
External Organizations;

Ma,  Huanfei
External Organizations;

/persons/resource/Juergen.Kurths

Kurths,  Jürgen
Potsdam Institute for Climate Impact Research;

Lai,  Ying-Cheng
External Organizations;

Lin,  Wei
External Organizations;

Aihara,  Kazuyuki
External Organizations;

Chen,  Luonan
External Organizations;

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24303oa.pdf
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Zitation

Leng, S., Ma, H., Kurths, J., Lai, Y.-C., Lin, W., Aihara, K., Chen, L. (2020): Partial cross mapping eliminates indirect causal influences. - Nature Communications, 11, 2632.
https://doi.org/10.1038/s41467-020-16238-0


Zitierlink: https://publications.pik-potsdam.de/pubman/item/item_24303
Zusammenfassung
Causality detection likely misidentifies indirect causations as direct ones, due to the effect of causation transitivity. Although several methods in traditional frameworks have been proposed to avoid such misinterpretations, there still is a lack of feasible methods for identifying direct causations from indirect ones in the challenging situation where the variables of the underlying dynamical system are non-separable and weakly or moderately interacting. Here, we solve this problem by developing a data-based, model-independent method of partial cross mapping based on an articulated integration of three tools from nonlinear dynamics and statistics: phase-space reconstruction, mutual cross mapping, and partial correlation. We demonstrate our method by using data from different representative models and real-world systems. As direct causations are keys to the fundamental underpinnings of a variety of complex dynamics, we anticipate our method to be indispensable in unlocking and deciphering the inner mechanisms of real systems in diverse disciplines from data.