Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Tie-RBAC: An application of RBAC to Social Networks   This paper explores the application of role-based access control to social
networks, from the perspective of social network analysis. Each tie, composed
of a relation, a sender and a receiver, involves the sender's assignation of
the receiver to a role with permissions. The model is not constrained to
system-defined relations and lets users define them unilaterally. It benefits
of RBAC's advantages, such as policy neutrality, simplification of security
administration and permissions on other roles. Tie-RBAC has been implemented in
a core for building social network sites, Social Stream.

34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
23
The categories of this paper are: solv-int