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- W4287848614 abstract "Evaluation of highly dependable systems requires estimating the probability of a significant rare event under which the system fails to meet the requirement. To improve the estimation accuracy, advanced Monte Carlo simulation techniques such as importance sampling (IS) are commonly used. However, IS is known to misbehave under high dimension. As a result, the IS estimator can have a large relative error and underestimate the rare event probability. In this paper, we propose a novel IS method based on the idea of maximum weight minimization (MWM). Our method works by finding the sampling distribution that minimizes the maximum weight of a rare event sample. To alleviate the curse of dimensionality, we develop further heuristics based on two problem-specific structures, namely, monotonicity and symmetry. Using extensive examples from network reliability, stochastic flow analysis, cyber-security risk assessment, and fault tree analysis, we evaluate the performance of MWM, demonstrate its accuracy and scalability, and highlight applications where it outperforms state-of-the-art techniques." @default.
- W4287848614 created "2022-07-26" @default.
- W4287848614 creator A5022586647 @default.
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- W4287848614 date "2022-06-01" @default.
- W4287848614 modified "2023-09-27" @default.
- W4287848614 title "Exploiting monotonicity and symmetry for efficient simulation of highly dependable systems" @default.
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- W4287848614 doi "https://doi.org/10.1109/dsn53405.2022.00040" @default.
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