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不确定性量化 — 多项式混沌与克里金代理模型

不确定性量化(UQ)是一个计算框架,用于系统地衡量模型输入中的不确定性如何传播到其输出中的不确定性。UQ建立在维纳的多项式混沌理论(1938年)基础上,并由Xiu和Karniadakis(2002年)推广到一般随机问题,它使用两种主要策略:多项式混沌展开(PCE),将模型输出表示为与输入分布匹配的正交多项式级数;以及克里金(高斯过程)代理模型,它用拟合少量精心选择的运行结果的快速统计近似来替代昂贵的模拟。

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来源

  1. Xiu, D. & Karniadakis, G.E. (2002). The Wiener-Askey Polynomial Chaos for Stochastic Differential Equations. SIAM Journal on Scientific Computing, 24(2), 619–644. DOI: 10.1137/S1064827501387826
  2. Smith, R.C. (2013). Uncertainty Quantification: Theory, Implementation, and Applications. SIAM. ISBN: 978-1611973211

如何引用本页

ScholarGate. (2026, June 1). Uncertainty Quantification (Polynomial Chaos Expansion and Kriging Surrogate). ScholarGate. https://scholargate.app/zh/simulation/uncertainty-quantification

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被引用于

ScholarGateUncertainty Quantification (Uncertainty Quantification (Polynomial Chaos Expansion and Kriging Surrogate)). 于 2026-06-15 检索自 https://scholargate.app/zh/simulation/uncertainty-quantification · 数据集: https://doi.org/10.5281/zenodo.20539026