TITLE

Distinguishing time-delayed causal interactions using convergent cross mapping

AUTHOR(S)
Ye, Hao; Deyle, Ethan R.; Gilarranz, Luis J.; Sugihara, George
PUB. DATE
October 2015
SOURCE
Scientific Reports;10/9/2015, p1
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
An important problem across many scientific fields is the identification of causal effects from observational data alone. Recent methods (convergent cross mapping, CCM) have made substantial progress on this problem by applying the idea of nonlinear attractor reconstruction to time series data. Here, we expand upon the technique of CCM by explicitly considering time lags. Applying this extended method to representative examples (model simulations, a laboratory predator-prey experiment, temperature and greenhouse gas reconstructions from the Vostok ice core, and longterm ecological time series collected in the Southern California Bight), we demonstrate the ability to identify different time-delayed interactions, distinguish between synchrony induced by strong unidirectional-forcing and true bidirectional causality, and resolve transitive causal chains.
ACCESSION #
110327899

 

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