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There exists a few branches which are key to the development of a cascading failure, so it is of great significance to find them. In order to identify these branches accurately, branch combinations should be concerned. This paper first proposes a reformulation of cascading failure process based on Markov decision process, and then Q-learning algorithm for model solution is introduced to find out the...
Software aging related failures can be prevented by applying software rejuvenation technology. But the restart operation in the software rejuvenation phase makes the system unable to provide services, which leads to system unavailability. The software rejuvenation model with pre-start technology is therefore proposed to reduce downtime and improve availability by switching between active copy and...
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