TY  - JOUR
IS  - 3
KW  - PACS: 89.75.Fb
KW  -  89.75.Hc
KW  -  05.40.-a
KW  -  05.65.+b
Y1  - 2004/03//
UR  - http://dx.doi.org/10.1103/PhysRevE.69.035101
A1  - Caldarelli, Guido
A1  - Caretta Cartozo, Cécile 
A1  - De Los Rios, Paolo
A1  - Servedio, Vito D. P.
JF  - Physical Review E
PB  - American Physical Society
VL  - 69
ID  - eprints1128
N2  - The widespread occurrence of an inverse square relation in the hierarchical distribution of subcommunities within communities (or subspecies 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 treelike classification method. Different treelike classifications (both of real and truly random systems) display a similar statistical behavior when considering the sizes of their sub-branches.
TI  - Widespread occurrence of the inverse square distribution in social sciences and taxonomy
AV  - none
SN  - 1539-3755
ER  -