arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2202.00995physics.chem-phcs.LGphysics.comp-phstat.ML
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具有多粒子输入的MD-GAN:从短时MD数据学习长时分子行为

MD-GAN with multi-particle input: the machine learning of long-time molecular behavior from short-time MD data

Keio University(庆应义塾大学);Mitsubishi Chemical Corporation(三菱化学株式会社)

Ryo Kawada, Katsuhiro Endo, Daisuke Yuhara, Kenji Yasuoka

摘要:

MD-GAN是一种基于机器学习的方法,可以在任何时间步进化系统的一部分,加速分子动力学数据的生成。为了准确预测MD-GAN,训练数据中应包含足够的系统部分动态信息。因此,系统的部件的选择对于有效学习是重要的。在以前的研究中,每个分子只有一个粒子(或载体)作为系统的一部分被提取出来。因此,我们研究了将来自其他粒子的信息添加到学习过程中的有效性。在聚乙烯系统的实验中,当使用每个分子的三个粒子的动力学时,与单粒子输入相比,使用训练数据的时间长度的三分之一成功地预测了扩散。令人惊讶的是,在训练数据中未观察到的扩散过渡也使用这种方法进行预测。

英文摘要:

MD-GAN is a machine learning-based method that can evolve part of the system at any time step, accelerating the generation of molecular dynamics data. For the accurate prediction of MD-GAN, sufficient information on the dynamics of a part of the system should be included with the training data. Therefore, the selection of the part of the system is important for efficient learning. In a previous study, only one particle (or vector) of each molecule was extracted as part of the system. Therefore, we investigated the effectiveness of adding information from other particles to the learning process. In the experiment of the polyethylene system, when the dynamics of three particles of each molecule were used, the diffusion was successfully predicted using one-third of the time length of the training data, compared to the single-particle input. Surprisingly, the unobserved transition of diffusion in the training data was also predicted using this method.

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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