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arXiv 1609.07124physics.chem-phphysics.data-an
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基于树的分子基态能量预测机器学习框架

Tree based machine learning framework for predicting ground state energies of molecules

Burak Himmetoglu

摘要:

我们提出了一个应用程序的提升回归树算法预测基态能量的分子组成的C,H,N,O,P,和S(CHNOPS)。PubChem化学化合物数据库已被纳入,以构建16,242个分子的数据集,其电子基态能量已使用密度泛函理论计算。该数据集用于训练增强回归树算法,其允许计算高效且准确地预测分子基态能量。从助推回归树的预测相比,神经网络回归,在文献中广泛使用的方法,并被证明是更准确的显着降低计算成本。使用CHNOPS集训练的回归模型的性能也在一组含有额外Cl和Si原子的不同分子上进行了测试。它表明,学习算法导致在分子发现和材料信息学的应用丰富多样的可能性。

英文摘要:

We present an application of the boosted regression tree algorithm for predicting ground state energies of molecules made up of C, H, N, O, P, and S (CHNOPS). The PubChem chemical compound database has been incorporated to construct a dataset of 16,242 molecules, whose electronic ground state energies have been computed using density functional theory. This dataset is used to train the boosted regression tree algorithm, which allows a computationally efficient and accurate prediction of molecular ground state energies. Predictions from boosted regression trees are compared with neural network regression, a widely used method in the literature, and shown to be more accurate with significantly reduced computational cost. The performance of the regression model trained using the CHNOPS set is also tested on a set of distinct molecules that contain additional Cl and Si atoms. It is shown that the learning algorithms lead to a rich and diverse possibility of applications in molecular discovery and materials informatics.

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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