Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2003-11-20
Physics
Condensed Matter
Statistical Mechanics
3 eps figures
Scientific paper
10.1103/PhysRevE.69.035101
The widespread occurrence of an inverse square relation in the hierarchical distribution of sub-communities within communities (or sub-species within species) has been recently invoked as a signature of hierarchical self-organization within social and ecological systems. Here we show that, whether such systems are self-organized or not, this behavior is the consequence of the tree-like classification method. Different tree-like classifications (both of real and truly random systems) display a similar statistical behaviour when considering the sizes of their sub-branches.
Caldarelli Guido
Cartozo Cecile Caretta
Los Rios Paolo de
Servedio Vito D. P.
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