Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An empirical study of spatial and transpatial social networks using
  Bluetooth and Facebook   This study provides insights into the quantitative similarities, differences
and relationships between users' spatial, face-to-face, urban social networks
and their transpatial, online counterparts. We explore and map the social ties
within a cohort of 2602 users, and how those ties are mediated via physical
co-presence and online tools. Our analysis focused on isolating two distinct
segments of the social network: one mediated by physical co-presence, and the
other mediated by Facebook. Our results suggest that as a whole the networks
exhibit homogeneous characteristics, but individuals' involvement in those
networks varies considerably. Furthermore this study provides a methodological
approach for jointly analysing spatial & transpatial networks utilising
pervasive and ubiquitous technology.

2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
25
The categories of this paper are: patt-sol
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
21
The categories of this paper are: adap-org
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn