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arXiv 2204.00735cond-mat.mtrl-scics.CE
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基于遗传程序设计的碳原子间相互作用势学习及其在材料发现中的应用

Genetic programming-based learning of carbon interatomic potential for materials discovery

Andrew Eldridge, Alejandro Rodriguez, Ming Hu, Jianjun Hu

摘要:

有效和准确的原子间相互作用势函数对于材料的计算研究以及寻找具有所需性质的结构是至关重要的。传统上,势函数或能量景观是由专家基于理论或启发式知识设计的。在这里,我们提出了一种新的方法来利用强类型的并行遗传编程(GP)的潜在功能发现。我们使用一个多目标进化算法与NSGA-III的选择,以优化个人的年龄,健身和复杂性,通过符号回归。利用从858个碳结构中提取的863个独特碳同素异形体构型的DFT数据集,所产生的势能够以低计算成本预测$\pm 7.70$ eV内的总能量,同时在多个碳结构中很好地推广。我们的代码是开放源代码,可从\url {http://www.example.com}获得www.github.com/usccolumbia/mlpotential

英文摘要:

Efficient and accurate interatomic potential functions are critical to computational study of materials while searching for structures with desired properties. Traditionally, potential functions or energy landscapes are designed by experts based on theoretical or heuristic knowledge. Here, we propose a new approach to leverage strongly typed parallel genetic programming (GP) for potential function discovery. We use a multi-objective evolutionary algorithm with NSGA-III selection to optimize individual age, fitness, and complexity through symbolic regression. With a DFT dataset of 863 unique carbon allotrope configurations drawn from 858 carbon structures, the generated potentials are able to predict total energies within $\pm 7.70$ eV at low computational cost while generalizing well across multiple carbon structures. Our code is open source and available at \url{http://www.github.com/usccolumbia/mlpotential

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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