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作者:

Li, Xiaoli (Li, Xiaoli.) (学者:李晓理) | Zhang, Shan (Zhang, Shan.) | Wang, Kang (Wang, Kang.)

收录:

EI SCIE

摘要:

For the severe haze situation in the Beijing-Tianjin-Hebei region, conventional fine particulate matter (PM2.5) concentration prediction methods based on pollutant data face problems such as incomplete data, which may lead to poor prediction performance. Therefore, this paper proposes a method of predicting the PM2.5 concentration based on image analysis technology that combines image data, which can reflect the original weather conditions, with currently popular machine learning methods. First, based on local parameter estimation, autoregressive (AR) model analysis and local estimation of the increase in image blur, we extract features from the weather images using an approach inspired by free energy and a no-reference robust metric model. Next, we compare the coefficient energy and contrast difference of each pixel in the AR model and then use the percentages to calculate the image sharpness to derive the overall mass fraction. Furthermore, the results are compared. The relationship between residual value and PM2.5 concentration is fitted by generalized Gauss distribution (GGD) model. Finally, nonlinear mapping is performed via the wavelet neural network (WNN) method to obtain the PM2.5 concentration. Experimental results obtained on real data show that the proposed method offers an improved prediction accuracy and lower root mean square error (RMSE).

关键词:

Autoregressive model feature extraction PM2.5 concentration prediction Wavelet neural network

作者机构:

  • [ 1 ] [Li, Xiaoli]Minist Educ, Beijing Key Lab Computat Intelligence & Intellige, Beijing 100124, Peoples R China
  • [ 2 ] [Li, Xiaoli]Minist Educ, Engn Res Ctr Digital Community, Beijing 100124, Peoples R China
  • [ 3 ] [Li, Xiaoli]Beijing Univ Technol, Fac Informat Technol, Beijing 100124, Peoples R China
  • [ 4 ] [Zhang, Shan]Beijing Univ Technol, Fac Informat Technol, Beijing 100124, Peoples R China
  • [ 5 ] [Wang, Kang]Beijing Univ Technol, Fac Informat Technol, Beijing 100124, Peoples R China
  • [ 6 ] [Li, Xiaoli]Beijing Future Network Sci & Technol Innovat Ctr, Beijing 100124, Peoples R China

通讯作者信息:

  • 李晓理

    [Li, Xiaoli]Minist Educ, Beijing Key Lab Computat Intelligence & Intellige, Beijing 100124, Peoples R China;;[Li, Xiaoli]Minist Educ, Engn Res Ctr Digital Community, Beijing 100124, Peoples R China;;[Li, Xiaoli]Beijing Univ Technol, Fac Informat Technol, Beijing 100124, Peoples R China;;[Li, Xiaoli]Beijing Future Network Sci & Technol Innovat Ctr, Beijing 100124, Peoples R China

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来源 :

KSII TRANSACTIONS ON INTERNET AND INFORMATION SYSTEMS

ISSN: 1976-7277

年份: 2020

期: 2

卷: 14

页码: 907-923

1 . 5 0 0

JCR@2022

ESI学科: COMPUTER SCIENCE;

ESI高被引阀值:34

JCR分区:4

被引次数:

WoS核心集被引频次: 1

SCOPUS被引频次: 1

ESI高被引论文在榜: 0 展开所有

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