计算机应用 ›› 2014, Vol. 34 ›› Issue (8): 2212-2216.DOI: 10.11772/j.issn.1001-9081.2014.08.2212

• 第五届中国数据挖掘会议(CCDM 2014)论文 • 上一篇    下一篇

基于特征向量的最小二乘支持向量机PM2.5浓度预测模型

李龙,马磊,贺建峰,邵党国,易三莉,相艳,刘立芳   

  1. 昆明理工大学 信息工程与自动化学院,昆明650500
  • 收稿日期:2014-05-07 修回日期:2014-05-12 出版日期:2014-08-01 发布日期:2014-08-10
  • 通讯作者: 李龙
  • 作者简介:李龙(1988-),男,黑龙江大庆人,硕士研究生,主要研究方向:数据挖掘;马磊(1978-),男(回族),云南昆明人,讲师,硕士,主要研究方向:数据挖掘、生物信息学、医疗信息系统;贺建峰(1965-),男,云南昆明人,教授,主要研究方向:数据挖掘、医学图像处理。
  • 基金资助:

    国家自然科学基金资助项目;教育部留学回国人员科研启动基金资助项目

PM2.5 concentration prediction model of least squares support vector machine based on feature vector

LI Long,MA Lei,HE Jianfeng,SHAO Dangguo,YI Sanli,XIANG Yan,LIU Lifang   

  1. School of Information Engineering and Automation, Kunming University of Science and Technology, Kunming Yunnan 650500, China
  • Received:2014-05-07 Revised:2014-05-12 Online:2014-08-01 Published:2014-08-10
  • Contact: LI Long

摘要:

针对大气中细颗粒物(PM2.5)浓度预测的问题,提出一种预测模型。首先,通过引入综合气象指数综合考虑风力、湿度、温度等因素;然后,结合实际二氧化硫(SO2)浓度、二氧化氮(NO2)浓度、一氧化碳(CO)浓度和PM10浓度等,构成特征向量;最后,利用特征向量和PM2.5浓度数据来建立最小二乘支持向量机(LS-SVM)预测模型。经2013年城市A和城市B环境监测中心的数据预测分析表明,引入综合气象指数后预测的准确性提高,误差降低近30%。说明该模型能够较为准确地预测PM2.5浓度,并具有较高的泛化能力。此外还分析了PM2.5浓度与住院率、医院门诊量的关系,发现了它们的高度相关性。

Abstract:

To solve the problem of Fine Particulate Matter (PM2.5) concentration prediction, a PM2.5 concentration prediction model was proposed. First, through introducing the comprehensive meteorological index, the factors of wind, humidity, temperature were comprehensively considered; then the feature vector was conducted by combining the actual concentration of SO2, NO2, CO and PM10; finally the Least Squares Support Vector Machine (LS-SVM) prediction model was built based on feature vector and PM2.5 concentration data. The experimental results using the data from the city A and city B environmental monitoring centers in 2013 show that, the forecast accuracy is improved after the introduction of a comprehensive weather index, error is reduced by nearly 30%. The proposed model can more accurately predict the PM2.5 concentration and it has a high generalization ability. Furthermore, the author analyzed the relationship between PM2.5 concentration and the rate of hospitalization, hospital outpatient service amount, and found a high correlation between them.

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