arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2202.01566stat.MLcs.LGphysics.chem-ph
收藏

原子中心表示的统一理论和消息传递机器学习方案

Unified theory of atom-centered representations and message-passing machine-learning schemes

École Polytechnique Fédérale de Lausanne(洛桑联邦理工学院);National Centre for Computational Design and Discovery of Novel Materials (MARVEL)(新型材料计算设计与发现国家中心(MARVEL))

Jigyasa Nigam, Sergey Pozdnyakov, Guillaume Fraux, Michele Ceriotti

摘要:

将分子和晶体结构与其微观性质相关联的数据驱动方案需要对其原子成分的排列进行简洁有效的描述。许多类型的模型依赖于对原子中心环境的描述,这些环境与原子属性或原子对广泛宏观量的贡献相关联。在这一类的框架可以理解的原子中心的密度相关性(ACDC),这是作为一个基础的身体有序,自适应扩展的目标。其他几个方案,收集信息的关系相邻原子使用“消息传递”的想法,不能直接映射到相关性围绕一个单一的原子。我们推广的ACDC框架,包括多中心的信息,生成表示,提供了一个完整的线性基础,回归对称函数的原子坐标,并提供了一个连贯的基础,系统化我们的理解原子为中心的和消息传递,不变和等变机器学习计划。

英文摘要:

Data-driven schemes that associate molecular and crystal structures with their microscopic properties share the need for a concise, effective description of the arrangement of their atomic constituents. Many types of models rely on descriptions of atom-centered environments, that are associated with an atomic property or with an atomic contribution to an extensive macroscopic quantity. Frameworks in this class can be understood in terms of atom-centered density correlations (ACDC), that are used as a basis for a body-ordered, symmetry-adapted expansion of the targets. Several other schemes, that gather information on the relationship between neighboring atoms using "message-passing" ideas, cannot be directly mapped to correlations centered around a single atom. We generalize the ACDC framework to include multi-centered information, generating representations that provide a complete linear basis to regress symmetric functions of atomic coordinates, and provides a coherent foundation to systematize our understanding of both atom-centered and message-passing, invariant and equivariant machine-learning schemes.

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。

↑