Correcting the systematic error of the density functional theory calculation: the alternate combination approach of genetic algorithm and neural network


Autoria(s): Wang TT (Wang Ting-Ting); Li WL (Li Wen-Long); Chen ZH (Chen Zhang-Hui); Miao L (Miao Ling)
Data(s)

2010

Resumo

The alternate combinational approach of genetic algorithm and neural network (AGANN) has been presented to correct the systematic error of the density functional theory (DFT) calculation. It treats the DFT as a black box and models the error through external statistical information. As a demonstration, the AGANN method has been applied in the correction of the lattice energies from the DFT calculation for 72 metal halides and hydrides. Through the AGANN correction, the mean absolute value of the relative errors of the calculated lattice energies to the experimental values decreases from 4.93% to 1.20% in the testing set. For comparison, the neural network approach reduces the mean value to 2.56%. And for the common combinational approach of genetic algorithm and neural network, the value drops to 2.15%. The multiple linear regression method almost has no correction effect here.

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Project supported by the National Basic Research Program of China (973 Program) (Grant No. G2009CB929300) and the National Natural Science Foundation of China (Grant No. 60521001 and 60925016).

国内

Project supported by the National Basic Research Program of China (973 Program) (Grant No. G2009CB929300) and the National Natural Science Foundation of China (Grant No. 60521001 and 60925016).

Identificador

http://ir.semi.ac.cn/handle/172111/13483

http://www.irgrid.ac.cn/handle/1471x/60789

Idioma(s)

英语

Fonte

Wang TT (Wang Ting-Ting), Li WL (Li Wen-Long), Chen ZH (Chen Zhang-Hui), Miao L (Miao Ling).Correcting the systematic error of the density functional theory calculation: the alternate combination approach of genetic algorithm and neural network.CHINESE PHYSICS B,2010,19(7):Art. No. 076401

Palavras-Chave #半导体物理 #density functional theory #neural network #genetic algorithm #alternate combination #LINEAR-REGRESSION CORRECTION #TRAINING SET #ELECTRON-GAS #PREDICTION #APPROXIMATION #DESCRIPTORS #ACCURATE #ENERGY #HEAT
Tipo

期刊论文