Multi-step time series generator for molecular dynamics

Katsuhiro Endo, Katsufumi Tomobe, Kenji Yasuoka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Molecular dynamics (MD) is a powerful computational method for simulating molecular behavior. Deep neural networks provide a novel method of generating MD data efficiently, but there is no architecture that mitigates the well-known exposure bias accumulated by multi-step generations. In this paper, we propose a multi-step time series generator using a deep neural network based on Wasserstein generative adversarial nets. Instead of sparse real data, our model evolves a latent variable z that is densely distributed in a low-dimensional space. This novel framework successfully mitigates the exposure bias. Moreover, our model can evolve part of the system (Feature extraction) with any time step (Step skip), which accelerates the efficient generation of MD data. The applicability of this model is evaluated through three different systems: harmonic oscillator, bulk water, and polymer melts. The experimental results demonstrate that our model can generate time series of the MD data with sufficient accuracy to calculate the physical and important dynamical statistics.

Original languageEnglish
Title of host publication32nd AAAI Conference on Artificial Intelligence, AAAI 2018
PublisherAAAI press
Pages2192-2199
Number of pages8
ISBN (Electronic)9781577358008
Publication statusPublished - 2018 Jan 1
Event32nd AAAI Conference on Artificial Intelligence, AAAI 2018 - New Orleans, United States
Duration: 2018 Feb 22018 Feb 7

Other

Other32nd AAAI Conference on Artificial Intelligence, AAAI 2018
CountryUnited States
CityNew Orleans
Period18/2/218/2/7

ASJC Scopus subject areas

  • Artificial Intelligence

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  • Cite this

    Endo, K., Tomobe, K., & Yasuoka, K. (2018). Multi-step time series generator for molecular dynamics. In 32nd AAAI Conference on Artificial Intelligence, AAAI 2018 (pp. 2192-2199). AAAI press.