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Investigating System Survivability from a Probabilistic Perspective
Yongxin ZHAO Yanhong HUANG Qin LI Huibiao ZHU Jifeng HE Jianwen LI Xi WU
IEICE TRANSACTIONS on Information and Systems
Publication Date: 2014/09/01
Online ISSN: 1745-1361
Type of Manuscript: PAPER
Category: Fundamentals of Information Systems
survivability, probability programs, probabilistic refinement, survivability specification,
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Survivability is an essential requirement of the networked information systems analogous to the dependability. The definition of survivability proposed by Knight in  provides a rigorous way to define the concept. However, the Knight's specification does not provide a behavior model of the system as well as a verification framework for determining the survivability of a system satisfying a given specification. This paper proposes a complete formal framework for specifying and verifying the concept of system survivability on the basis of Knight's research. A computable probabilistic model is proposed to specify the functions and services of a networked information system. A quantified survivability specification is proposed to indicate the requirement of the survivability. A probabilistic refinement relation is defined to determine the survivability of the system. The framework is then demonstrated with three case studies: the restaurant system (RES), the Warship Command and Control system (LWC) and the Command-and-Control (C2) system.