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Rules for Biologically Inspired Adaptive Network Design
Atsushi Tero,1,2
Seiji Takagi,1
Tetsu Saigusa,3
Kentaro Ito,1
Dan P. Bebber,4
Mark D. Fricker,4
Kenji Yumiki,5
Ryo Kobayashi,5,6
Toshiyuki Nakagaki1,6,*
Abstract:
Transport networks are ubiquitous in both social and biologicalsystems. Robust network performance involves a complex trade-offinvolving cost, transport efficiency, and fault tolerance. Biologicalnetworks have been honed by many cycles of evolutionary selectionpressure and are likely to yield reasonable solutions to suchcombinatorial optimization problems. Furthermore, they developwithout centralized control and may represent a readily scalablesolution for growing networks in general. We show that the slimemold Physarum polycephalum forms networks with comparable efficiency,fault tolerance, and cost to those of real-world infrastructurenetworks—in this case, the Tokyo rail system. The coremechanisms needed for adaptive network formation can be capturedin a biologically inspired mathematical model that may be usefulto guide network construction in other domains.
1 Research Institute for Electronic Science, Hokkaido University, Sapporo 060-0812, Japan. 2 PRESTO, JST, 4-1-8 Honcho, Kawaguchi, Saitama, Japan. 3 Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan. 4 Department of Plant Sciences, University of Oxford, Oxford OX1 3RB, UK. 5 Department of Mathematical and Life Sciences, Hiroshima University, Higashi-Hiroshima 739-8526, Japan. 6 JST, CREST, 5 Sanbancho, Chiyoda-ku, Tokyo, 102-0075, Japan.
* To whom correspondence should be addressed. E-mail: nakagaki{at}es.hokudai.ac.jp
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