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The Improvement of Sobol' Sensitivity Analysis Method

机译:软骨敏感性分析方法的改进

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Sobol' sensitivity analysis method is widely used as a classical approach in global sensitivity analysis. this paper improves the integral used for calculating conditional variance, and proves that it can reduce error in the view of Monte Carlo method; besides, Sobol' low discrepancy sequence is replaced by another quasi-random numbers with lower star discrepancy generated by uniform design to increase accuracy of Quasi-Monte Carlo method. A numerical example verifies that both measures can effectively improve accuracy of estimation of sensitivity index for Quasi-Monte Carlo method.
机译:SOBOL'敏感性分析方法广泛用作全球敏感性分析中的经典方法。本文改善了用于计算条件方差的积分,并证明它可以减少蒙特卡罗方法的误差;此外,Sobol'低差异序列被另一个准随机数取代,其中具有均匀设计产生的较低的星形差异,以提高准蒙特卡罗方法的准确性。数值示例验证了两种措施可以有效提高准蒙特卡罗方法的灵敏度指数估计的准确性。

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