Bundled Causal History Interaction

Complex systems arise as a result of the nonlinear interactions between components. In particular, the evolutionary dynamics of a multivariate system encodes the ways in which different variables interact with each other individually or in groups. One fundamental question that remains unanswered is:...

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Main Authors: Peishi Jiang, Praveen Kumar
Format: Article
Language:English
Published: MDPI AG 2020-03-01
Series:Entropy
Subjects:
Online Access:https://www.mdpi.com/1099-4300/22/3/360
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author Peishi Jiang
Praveen Kumar
author_facet Peishi Jiang
Praveen Kumar
author_sort Peishi Jiang
collection DOAJ
description Complex systems arise as a result of the nonlinear interactions between components. In particular, the evolutionary dynamics of a multivariate system encodes the ways in which different variables interact with each other individually or in groups. One fundamental question that remains unanswered is: How do two non-overlapping multivariate subsets of variables interact to causally determine the outcome of a specific variable? Here, we provide an information-based approach to address this problem. We delineate the temporal interactions between the bundles in a probabilistic graphical model. The strength of the interactions, captured by partial information decomposition, then exposes complex behavior of dependencies and memory within the system. The proposed approach successfully illustrated complex dependence between cations and anions as determinants of <i>pH</i> in an observed stream chemistry system. In the studied catchment, the dynamics of <i>pH</i> is a result of both cations and anions through mainly synergistic effects of the two and their individual influences as well. This example demonstrates the potentially broad applicability of the approach, establishing the foundation to study the interaction between groups of variables in a range of complex systems.
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spelling doaj.art-9c672c776c3e4b589eb56647302c06a02022-12-22T04:09:45ZengMDPI AGEntropy1099-43002020-03-0122336010.3390/e22030360e22030360Bundled Causal History InteractionPeishi Jiang0Praveen Kumar1Ven Te Chow Hydrosystem Laboratory, Civil and Environmental Engineering, University of Illinois, Urbana, IL 61801, USAVen Te Chow Hydrosystem Laboratory, Civil and Environmental Engineering, University of Illinois, Urbana, IL 61801, USAComplex systems arise as a result of the nonlinear interactions between components. In particular, the evolutionary dynamics of a multivariate system encodes the ways in which different variables interact with each other individually or in groups. One fundamental question that remains unanswered is: How do two non-overlapping multivariate subsets of variables interact to causally determine the outcome of a specific variable? Here, we provide an information-based approach to address this problem. We delineate the temporal interactions between the bundles in a probabilistic graphical model. The strength of the interactions, captured by partial information decomposition, then exposes complex behavior of dependencies and memory within the system. The proposed approach successfully illustrated complex dependence between cations and anions as determinants of <i>pH</i> in an observed stream chemistry system. In the studied catchment, the dynamics of <i>pH</i> is a result of both cations and anions through mainly synergistic effects of the two and their individual influences as well. This example demonstrates the potentially broad applicability of the approach, establishing the foundation to study the interaction between groups of variables in a range of complex systems.https://www.mdpi.com/1099-4300/22/3/360bundled causal dynamicsinformation measurescomplex system
spellingShingle Peishi Jiang
Praveen Kumar
Bundled Causal History Interaction
Entropy
bundled causal dynamics
information measures
complex system
title Bundled Causal History Interaction
title_full Bundled Causal History Interaction
title_fullStr Bundled Causal History Interaction
title_full_unstemmed Bundled Causal History Interaction
title_short Bundled Causal History Interaction
title_sort bundled causal history interaction
topic bundled causal dynamics
information measures
complex system
url https://www.mdpi.com/1099-4300/22/3/360
work_keys_str_mv AT peishijiang bundledcausalhistoryinteraction
AT praveenkumar bundledcausalhistoryinteraction