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arXiv 1502.04563physics.chem-ph
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化学空间中一个核的多种分子性质

Many Molecular Properties from One Kernel in Chemical Space

Raghunathan Ramakrishnan, O. Anatole von Lilienfeld

摘要:

我们引入了属性独立的内核,用于任意多个分子属性的机器学习建模。内核编码不同大小的训练集的分子结构,以及在化学空间中充分扩散以在所有训练分子上采样的相似性度量。提供了相应的分子参考属性,它们可以即时生成ML模型,并可以通过添加更多数据来系统地改进ML模型。这种想法被例示为基于单核的内能、焓、自由能、热容、极化率、电子扩散、零点振动能、前线轨道能量、HOMO-LUMO能隙和最高基本振动波数的建模。这些属性的模型使用112公斤类似大小的有机分子进行训练和测试。所产生的模型进行了讨论,以及用于生成和使用其他属性模型的内核的使用。

英文摘要:

We introduce property-independent kernels for machine learning modeling of arbitrarily many molecular properties. The kernels encode molecular structures for training sets of varying size, as well as similarity measures sufficiently diffuse in chemical space to sample over all training molecules. Corresponding molecular reference properties provided, they enable the instantaneous generation of ML models which can systematically be improved through the addition of more data. This idea is exemplified for single kernel based modeling of internal energy, enthalpy, free energy, heat capacity, polarizability, electronic spread, zero-point vibrational energy, energies of frontier orbitals, HOMO-LUMO gap, and the highest fundamental vibrational wavenumber. Models of these properties are trained and tested using 112 kilo organic molecules of similar size. Resulting models are discussed as well as the kernels' use for generating and using other property models.

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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