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arXiv 2106.01552astro-ph.IMastro-ph.HEstat.APstat.ME
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双黑洞形成计算机模型的不确定性量化

Uncertainty Quantification of a Computer Model for Binary Black Hole Formation

Luyao Lin, Derek Bingham, Floor Broekgaarden, Ilya Mandel

摘要:

本文介绍了一种基于高斯过程的快速并行方法,用于模拟大质量恒星演化过程中双星黑洞形成的计算机模型。在这种应用中出现的两个障碍是BBH形成的先验未知条件和模拟数据的大规模。我们提出了一个本地仿真器,它结合了GP分类器和GP回归模型来解决这些问题。由此产生的仿真器也可以用于规划未来的计算机模拟,通过顺序设计的建议标准。通过仿真器传播模拟输入的不确定性,我们能够得到BBH性质的分布下的物理参数分布。

英文摘要:

In this paper, a fast and parallelizable method based on Gaussian Processes (GPs) is introduced to emulate computer models that simulate the formation of binary black holes (BBHs) through the evolution of pairs of massive stars. Two obstacles that arise in this application are the a priori unknown conditions of BBH formation and the large scale of the simulation data. We address them by proposing a local emulator which combines a GP classifier and a GP regression model. The resulting emulator can also be utilized in planning future computer simulations through a proposed criterion for sequential design. By propagating uncertainties of simulation input through the emulator, we are able to obtain the distribution of BBH properties under the distribution of physical parameters.

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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