2 research outputs found
Analysis of the effectiveness of the truth-spreading strategy for inhibiting rumors
Spreading truths is recognized as a feasible strategy for inhibiting rumors.
This paper is devoted to assessing the effectiveness of the truth-spreading
strategy. An individual-level rumor-truth spreading model (the generic URTU
model) is derived. Under the model, two criteria for the termination of a rumor
are presented. These criteria capture the influence of the network structures
on the effectiveness of the truth-spreading strategy. Extensive simulations
show that, when the rumor or the truth terminates, the dynamics of a simplified
URTU model (the linear URTU model) fits well with the actual rumor-truth
interplay process. Therefore, the generic URTU model forms a theoretical basis
for assessing the effectiveness of the truth-spreading strategy for restraining
rumors.Comment: arXiv admin note: text overlap with arXiv:1705.0481
Security evaluation of cyber networks under advanced persistent threats
This paper is devoted to measuring the security of cyber networks under
advanced persistent threats (APTs). First, an APT-based cyber attack-defense
process is modeled as an individual-level dynamical system. Second, the dynamic
model is shown to exhibit the global stability. On this basis, a new security
metric of cyber networks, which is known as the limit security, is defined as
the limit expected fraction of compromised nodes in the networks. Next, the
influence of different factors on the limit security is illuminated through
theoretical analysis and computer simulation. This work helps understand the
security of cyber networks under APTs