Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Time evolution of the behaviour of Brazilian legislative Representatives
  using a complex network approach   The follow up of Representative behavior after elections is imperative for a
democratic Representative system, at the very least to punish betrayal with no
re-election. Our goal was to show how to follow Representatives' and how to
show behavior in real situations and observe trends in political crises
including the onset of game changing political instabilities. We used
correlation and correlation distance matrices of Brazilian Representative votes
during four presidential terms. Re-ordering these matrices with Minimal
Spanning Trees displays the dynamical formation of clusters for the sixteen
year period, which includes one Presidential impeachment. The reordered
matrices, colored by correlation strength and by the parties clearly show the
origin of observed clusters and their evolution over time. When large clusters
provide government support cluster breaks, political instability arises, which
could lead to an impeachment, a trend we observed three years before the
Brazilian President was impeached. We believe this method could be applied to
foresee other political storms.

19
The categories of this paper are: eess
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th