Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bipartite Network Model for Inferring Hidden Ties in Crime Data   Certain crimes are hardly committed by individuals but carefully organised by
group of associates and affiliates loosely connected to each other with a
single or small group of individuals coordinating the overall actions. A common
starting point in understanding the structural organisation of criminal groups
is to identify the criminals and their associates. Situations arise in many
criminal datasets where there is no direct connection among the criminals. In
this paper, we investigate ties and community structure in crime data in order
to understand the operations of both traditional and cyber criminals, as well
as to predict the existence of organised criminal networks. Our contributions
are twofold: we propose a bipartite network model for inferring hidden ties
between actors who initiated an illegal interaction and objects affected by the
interaction, we then validate the method in two case studies on pharmaceutical
crime and underground forum data using standard network algorithms for
structural and community analysis. The vertex level metrics and community
analysis results obtained indicate the significance of our work in
understanding the operations and structure of organised criminal networks which
were not immediately obvious in the data. Identifying these groups and mapping
their relationship to one another is essential in making more effective
disruption strategies in the future.

6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex