Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ranking structures and Rank-Rank Correlations of Countries. The FIFA and
  UEFA cases   Ranking of agents competing with each other in complex systems may lead to
paradoxes according to the pre-chosen different measures. A discussion is
presented on such rank-rank, similar or not, correlations based on the case of
European countries ranked by UEFA and FIFA from different soccer competitions.
The first question to be answered is whether an empirical and simple law is
obtained for such (self-) organizations of complex sociological systems with
such different measuring schemes. It is found that the power law form is not
the best description contrary to many modern expectations. The stretched
exponential is much more adequate. Moreover, it is found that the measuring
rules lead to some inner structures, in both cases.

27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
17
The categories of this paper are: q-fin