Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Conflicting attachment and the growth of bipartite networks   Simple growth mechanisms have been proposed to explain the emergence of
seemingly universal network structures. The widely-studied model of
preferential attachment assumes that new nodes are more likely to connect to
highly connected nodes. Preferential attachment explains the emergence of
scale-free degree distributions within complex networks. Yet, it is
incompatible with many network systems, particularly bipartite systems in which
two distinct types of agents interact. For example, the addition of new links
in a host-parasite system corresponds to the infection of hosts by parasites.
Increasing connectivity is beneficial to a parasite and detrimental to a host.
Therefore, the overall network connectivity is subject to conflicting
pressures. Here, we propose a stochastic network growth model of conflicting
attachment, inspired by a particular kind of parasite-host interactions: that
of viruses interacting with microbial hosts. The mechanism of network growth
includes conflicting preferences to network density as well as costs involved
in modifying the network connectivity according to these preferences. We find
that the resulting networks exhibit realistic patterns commonly observed in
empirical data, including the emergence of nestedness, modularity, and
nested-modular structures that exhibit both properties. We study the role of
conflicting interests in shaping network structure and assess opportunities to
incorporate greater realism in linking growth process to pattern in systems
governed by antagonistic and mutualistic interactions.

14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
17
The categories of this paper are: q-fin
11
The categories of this paper are: hep-lat