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arXiv 2302.00485cs.LG
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用于晶体材料发现的等变消息传递神经网络

Equivariant Message Passing Neural Network for Crystal Material Discovery

Univ. Artois(阿尔图瓦大学)

Astrid Klipfel, Olivier Peltre, Najwa Harrati, Yaël Fregier, Adlane Sayede, Zied Bouraoui

摘要:

自动发现具有所需性能的材料是材料科学的基本挑战。近来,相当多的注意力被投入到产生稳定的晶体结构上。虽然现有的工作已经显示出令人印象深刻的成功的监督任务,如属性预测,在无监督的任务,如材料生成的进展仍然受到限制的程度,其中相同的晶体的等效几何表示被认为是。为了解决这一挑战,我们提出了EMPNN的周期性等变的消息传递神经网络,学习晶格变形在一个无监督的方式。我们的模型根据必须执行的变形动作等效地作用于晶格,使其适合于晶体生成,松弛和优化。我们提出的实验评估,证明我们的方法的有效性。

英文摘要:

Automatic material discovery with desired properties is a fundamental challenge for material sciences. Considerable attention has recently been devoted to generating stable crystal structures. While existing work has shown impressive success on supervised tasks such as property prediction, the progress on unsupervised tasks such as material generation is still hampered by the limited extent to which the equivalent geometric representations of the same crystal are considered. To address this challenge, we propose EMPNN a periodic equivariant message-passing neural network that learns crystal lattice deformation in an unsupervised fashion. Our model equivalently acts on lattice according to the deformation action that must be performed, making it suitable for crystal generation, relaxation and optimisation. We present experimental evaluations that demonstrate the effectiveness of our approach.

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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