Predicting trajectory behaviour via machine-learned invariant manifolds

被引:3
|
作者
Krajnak, Vladimir [1 ]
Naik, Shibabrat [1 ]
Wiggins, Stephen [1 ]
机构
[1] Univ Bristol, Sch Math, Fry Bldg,Woodland Rd, Bristol BS8 1UG, England
基金
英国工程与自然科学研究理事会;
关键词
Hamiltonian dynamics; Support vector machines; Phase space structures; Roaming; Ionmolecule reaction; MULTIPLE TRANSITION-STATES; ION-MOLECULE REACTIONS; ROAMING REACTIONS; REACTIVE ISLANDS; DYNAMICS; ISOMERIZATION;
D O I
10.1016/j.cplett.2021.139290
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this paper, we use support vector machines (SVM) to develop a machine learning framework to discover phase space structures that distinguish between distinct reaction pathways. The SVM model is trained using data from trajectories of Hamilton's equations and works well even with relatively few trajectories. Moreover, this framework is specifically designed to require minimal a priori knowledge of the dynamics in a system. This makes our approach computationally better suited than existing methods for high-dimensional systems and systems where integrating trajectories is expensive. We benchmark our approach on Chesnavich's CH4+ Hamiltonian.
引用
收藏
页数:8
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