Title
Evidential Network Modeling for Cyber-Physical System State Inference.
Abstract
Cyber-physical systems (CPSs) have dependability requirements that are associated with controlling a physical process. Cyber-attacks can result in those requirements not being met. Consequently, it is important to monitor a CPS in order to identify deviations from normal operation. A major challenge is inferring the cause of these deviations in a trustworthy manner. This is necessary to support the implementation of correct and timely control decisions, in order to mitigate cyber-attacks and other causes of reduced dependability. This paper presents evidential networks as a solution to this problem. Through the evaluation of a representative use case for cyber-physical control systems, this paper shows novel approaches to integrate low-level sensors of different types, in particular those for cyber-attack detection, and reliabilities into evidential networks. The results presented indicate that evidential networks can identify system states with an accuracy that is comparable to approaches that use classical Bayesian probabilities to describe causality. However, in addition, evidential networks provide information about the uncertainty of a derived system state, which is a significant benefit, as it can be used to build trust in the results of automatic reasoning systems.
Year
DOI
Venue
2017
10.1109/ACCESS.2017.2718498
IEEE ACCESS
Keywords
Field
DocType
Communication technologies,computer networks,network security,data system,data processing,data integration,industry applications,security,security management,power engineering and energy,power systems,microgrid,attack causality
Data mining,Causality,Dependability,Computer science,Trustworthiness,Inference,Cyber-physical system,Artificial intelligence,Control system,Network model,Machine learning,Bayesian probability
Journal
Volume
ISSN
Citations 
5
2169-3536
1
PageRank 
References 
Authors
0.35
17
5
Name
Order
Citations
PageRank
Ivo Friedberg1402.75
Xin Hong272.13
Kieran McLaughlin320822.19
Paul Smith49410.97
Paul Miller51419.83