Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Reliability of Critical Infrastructure Networks: Challenges   Critical infrastructures form a technological skeleton of our world by
providing us with water, food, electricity, gas, transportation, communication,
banking, and finance. Moreover, as urban population increases, the role of
infrastructures become more vital. In this paper, we adopt a network
perspective and discuss the ever growing need for fundamental interdisciplinary
study of critical infrastructure networks, efficient methods for estimating
their reliability, and cost-effective strategies for enhancing their
resiliency. We also highlight some of the main challenges arising on this way,
including cascading failures, feedback loops, and cross-sector
interdependencies.

34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga