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arXiv 1804.01151physics.chem-phphysics.comp-ph
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原子力直接和局部深度神经网络的尺寸和温度可传递性

Size and Temperature Transferability of Direct and Local Deep Neural Networks for Atomic Forces

Natalia Kuritz, Goren Gordon, Amir Natan

摘要:

提出了一种原子力的直接和局部深度学习(DL)模型。我们展示了散装铝,钠和硅的模型性能;并表明其误差与最先进的机器学习和DL模型中发现的误差相当。然后,我们分析了模型的性能作为邻居数量的函数,并表明可以通过分析深度学习模型的行为来确定系统的物理属性。最后,我们测试了模型的尺寸缩放性能,以及不同温度之间的可转移性,并表明我们的模型在缩放到更大的系统和从高到低的温度可预测性方面都表现良好。

英文摘要:

A direct and local deep learning (DL) model for atomic forces is presented. We demonstrate the model performance in bulk aluminum, sodium, and silicon; and show that its errors are comparable to those found in state-of-the-art machine learning and DL models. We then analyze the model's performance as a function of the number of neighbors included and show that one can ascertain physical attributes of the system from the analysis of the deep learning model's behavior. Finally, we test the size scaling performance of the model, and the transferability between different temperatures, and show that our model performs well in both scaling to larger systems and high-to-low temperature predictability.

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