Volume 130, Number 2, April 2020
|Number of page(s)||7|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||29 May 2020|
Probabilistic causal inference for coordinated movement of pigeon flocks
1 School of Mathematics, Southeast University - Nanjing 211096, PRC
2 School of Cyberspace Science and Engineering, Southeast University - Nanjing 211096, PRC
Received: 17 February 2020
Accepted: 12 May 2020
One of the most striking examples of natural animal behavior is the highly ordered coordinated group movement, where inter-agent interaction is considered as a key factor tuning the coordination. To understand the interaction mechanism, a long-standing challenge is to reveal the causal relationship among the group individuals. In this study, we propose a causal inference method from the viewpoint of information theory. More precisely, we extend conditional information entropy of pairwise individuals with time delay, and subsequently induce causation entropy which quantifies the causal dependence of two individuals subject to a condition set consisting of other neighbors. Moreover, we analyze the high-resolution GPS data of three pigeon flocks to construct the interaction networks accordingly. We dynamically analyze the interaction characteristics and interestingly observe that the individuals closer to the mass center and the average velocity direction are more influential to the others. This study may shed some light onto the research of collective behaviors.
PACS: 89.75.-k – Complex systems / 89.75.Da – Systems obeying scaling laws / 87.18.Vf – Systems biology
© EPLA, 2020
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.