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A discrete-time Bayesian network reliability modeling and analysis framework
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DOI：10.1016/j.ress.2004.06.004.png)
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Dependability tools are becoming an indispensable tool for modeling and analyzing (critical) systems. However the growing complexity of such systems calls for increasing sophistication of these tools. Dependability tools need to not only capture the complex dynamic behavior of the system components, but they must be also easy to use, intuitive, and computationally efficient. In general, current tools have a number of shortcomings including lack of modeling power, incapacity to efficiently handle general component failure distributions, and ineffectiveness in solving large models that exhibit complex dependencies between their components. We propose a novel reliability modeling and analysis framework based on the Bayesian network (BN) formalism. The overall approach is to investigate timed Bayesian networks and to find a suitable reliability framework for dynamic systems. We have applied our methodology to two example systems and preliminary results are promising. We have defined a discrete-time BN reliability formalism and demonstrated its capabilities from a modeling and analysis point of view. This research shows that a BN based reliability formalism is a powerful potential solution to modeling and analyzing various kinds of system components behaviors and interactions. Moreover, being based on the BN formalism, the framework is easy to use and intuitive for non-experts, and provides a basis for more advanced and useful analyses such as system diagnosis. (C) 2004 Elsevier Ltd. All rights reserved.
Keyword:
probabilistic risk assessment
reliability modeling
reliability analysis
diagnosis
temporal Bayesian networks
dynamic system
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Improving the analysis of dependable systems by mapping fault trees into Bayesian networks通过将故障树映射到贝叶斯网络来改善对可靠系统的分析
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