Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Collaborative tagging as a tripartite network   We describe online collaborative communities by tripartite networks, the
nodes being persons, items and tags. We introduce projection methods in order
to uncover the structures of the networks, i.e. communities of users, genre
families...
  To do so, we focus on the correlations between the nodes, depending on their
profiles, and use percolation techniques that consist in removing less
correlated links and observing the shaping of disconnected islands. The
structuring of the network is visualised by using a tree representation. The
notion of diversity in the system is also discussed.

15
The categories of this paper are: nucl-ex
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
16
The categories of this paper are: stat
3
The categories of this paper are: physics
10
The categories of this paper are: q-bio