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arXiv 1902.01289stat.ME
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随机高斯过程仿真器的诊断

Diagnostics for Stochastic Gaussian Process Emulators

Evan Baker, Peter Challenor, Matt Eames

摘要:

计算机模型,也被称为模拟器,运行起来可能在计算上是昂贵的,因此经常使用被称为仿真器的统计代理。任何统计模型,包括模拟器,在使用之前都应该进行验证,否则可能会误导最终的决策。我们讨论如何验证高斯过程仿真器的确定性模型的方法是不够的随机计算机模型的仿真器,并开发一个框架,诊断随机仿真器中的问题。这些诊断基于使用样本外、重复、模拟器运行独立验证均值和方差预测。然后,我们还使用建筑性能模拟器作为案例研究的例子。

英文摘要:

Computer models, also known as simulators, can be computationally expensive to run, and for this reason statistical surrogates, known as emulators, are often used. Any statistical model, including an emulator, should be validated before being used, otherwise resulting decisions can be misguided. We discuss how current methods for validating Gaussian process emulators of deterministic models are insufficient for emulators of stochastic computer models and develop a framework for diagnosing problems in stochastic emulators. These diagnostics are based on independently validating the mean and variance predictions using out-of-sample, replicated, simulator runs. We then also use a building performance simulator as a case study example.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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