手把手教非专家如何选、用、评估机器学习原子间势函数。
A practical guide to machine learning interatomic potentials -- Status and future
- 梳理主流MLIP方法原理与适用场景
- 提供基于硬件和精度需求的选型指南
- 涵盖训练数据、性能评估与未来方向
机器学习原子间势函数(MLIPs)发展迅速,文献繁多,对非专业研究者而言难以入手。本文旨在提供一份实用、易懂的前沿指南,覆盖MLIP的核心原理、不同类别结构与形式化基础;讨论通用型MLIP在有机与无机体系中的变革潜力,包括最新进展、能力边界、局限性及应用前景;给出基于硬件条件、模拟规模与时间、计算速度的执行效率评估方法;提供根据资源、速度、能量/力精度要求选择合适模型的决策流程,包括使用预训练势或从头拟合的选择建议;介绍训练数据来源、预训练模型与训练硬件资源;总结当前主要局限,如长程相互作用、磁性体系与激发态处理,并提出应对策略;最后展望未来3-10年乃至更远的MLIP发展方向。
原文摘要 · Abstract (English)
The rapid development and large body of literature on machine learning interatomic potentials (MLIPs) can make it difficult to know how to proceed for researchers who are not experts but wish to use these tools. The spirit of this review is to help such researchers by serving as a practical, accessible guide to the state-of-the-art in MLIPs. This review paper covers a broad range of topics related to MLIPs, including (i) central aspects of how and why MLIPs are enablers of many exciting advancements in molecular modeling, (ii) the main underpinnings of different types of MLIPs, including their basic structure and formalism, (iii) the potentially transformative impact of universal MLIPs for both organic and inorganic systems, including an overview of the most recent advances, capabilities, downsides, and potential applications of this nascent class of MLIPs, (iv) a practical guide for estimating and understanding the execution speed of MLIPs, including guidance for users based on hardware availability, type of MLIP used, and prospective simulation size and time, (v) a manual for what MLIP a user should choose for a given application by considering hardware resources, speed requirements, energy and force accuracy requirements, as well as guidance for choosing pre-trained potentials or fitting a new potential from scratch, (vi) discussion around MLIP infrastructure, including sources of training data, pre-trained potentials, and hardware resources for training, (vii) summary of some key limitations of present MLIPs and current approaches to mitigate such limitations, including methods of including long-range interactions, handling magnetic systems, and treatment of excited states, and finally (viii) we finish with some more speculative thoughts on what the future holds for the development and application of MLIPs over the next 3-10+ years.
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