Abstract:
:Shortest paths are not always simple. In planar networks, they can be very different from those with the smallest number of turns--the simplest paths. The statistical comparison of the lengths of the shortest and simplest paths provides a non trivial and non local information about the spatial organization of these graphs. We define the simplicity index as the average ratio of these lengths and the simplicity profile characterizes the simplicity at different scales. We measure these metrics on artificial (roads, highways, railways) and natural networks (leaves, slime mould, insect wings) and show that there are fundamental differences in the organization of urban and biological systems, related to their function, navigation or distribution: straight lines are organized hierarchically in biological cases, and have random lengths and locations in urban systems. In the case of time evolving networks, the simplicity is able to reveal important structural changes during their evolution.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Viana MP,Strano E,Bordin P,Barthelemy Mdoi
10.1038/srep03495subject
Has Abstractpub_date
2013-12-13 00:00:00pages
3495issn
2045-2322pii
srep03495journal_volume
3pub_type
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