Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: From boom to bust and back again: the complex dynamics of trends and
  fashions   Social trends or fashions are spontaneous collective decisions made by large
portions of a community, often without an apparent good reason. The spontaneous
formation of trends provides a well documented mechanism for the spread of
information across a population, the creation of culture and the
self-regulation of social behavior. Here I introduce an agent based dynamical
model that captures the essence of trend formation and collapse. The resulting
population dynamics alternates states of great diversity (large configurational
entropy) with the dominance by a few trends. This behavior displays a kind of
self-organized criticality, measurable through cumulants analogous to those
used to study percolation. I also analyze the robustness of trend dynamics
subject to external influences, such as population growth or contraction and in
the presence of explicit information biases. The resulting population response
gives insights about the fragility of public opinion in specific circumstances
and suggests how it may be driven to produce social consensus or dissonance.

2
The categories of this paper are: math
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin