Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: When being Weak is Brave: Privacy in Recommender Systems   We explore the conflict between personalization and privacy that arises from
the existence of weak ties. A weak tie is an unexpected connection that
provides serendipitous recommendations. However, information about weak ties
could be used in conjunction with other sources of data to uncover identities
and reveal other personal information. In this article, we use a
graph-theoretic model to study the benefit and risk from weak ties.

37
The categories of this paper are: supr-con
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol