使用数据驱动优化来自动化动力蒙特卡洛模型的参数化
Ioannis Kouroudis1, Manuel Gößwein1, Alessio Gagliardi1
1Department of Electrical and Computer Engineering, Technical University of Munich, Hans-Piloty-Strasse 1/III, 85748 Garching bei München, Germany.
本研究介绍了一种基于数据的方法,使用高斯过程和贝叶斯优化来有效参数化动力蒙特卡洛 (kMC) 模拟. 这种方法显著降低了计算成本,并加速了对复杂系统的合适输入参数的发现.
科学领域:
- 计算物理 计算物理
- 材料科学 材料科学 材料科学
- 数据科学数据科学数据科学
背景情况:
- 动力蒙特卡洛 (kMC) 模拟对于研究动态随机系统至关重要.
- 高计算成本和参数化的挑战限制了kMC的适用性,特别是在复杂的系统中.
- 自动化参数化对于高效的kMC模型利用至关重要.
研究的目的:
- 开发一个数据驱动的方法,用于高效和系统的输入参数化 kMC 模拟.
- 为了减少与为kMC模型找到最佳参数相关的计算负担.
- 提高kMC模拟在复杂的科学和工业应用中的可用性.
主要方法:
- 在反循环中将kMC模拟与高斯过程 (GPs) 和贝叶斯优化 (BO) 结合起来.
- 利用快速的kMC模拟结果来训练一个廉价评估的GP代孕模型.
- 采用系统特定的获取函数用于BO指导参数预测.
主要成果:
- 开发的方法允许对kMC模型进行系统和数据高效的输入参数化.
- 在固态电解质中参数化空间电荷层形成的有效性得到证明.
- 在1-2次代内实现了准确的参数重建,并在训练数据之外成功推断.
- 替代模型的准确性得到了验证,这可能使原来的kMC模拟变得过时.
结论:
- 整合GP和BO为克服kMC计算限制提供了一个强大的解决方案.
- 这种数据驱动的方法显著加速了复杂模拟的参数发现过程.
- 该方法在材料科学中具有很高的应用潜力,特别是在固态电池等领域.
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