title: Application of decomposition-ensemble learning paradigm with phase space reconstruction for day-ahead PM2.5concentration forecasting.
abstract: PM2.5concentration have received considerable attention from meteorologists, who are able to notify the public and take precautionary measures to prevent negative effects on health. Therefore, establishing an efficient early warning system plays a critical role in fostering public health in heavily polluted areas. In this study, ensemble empirical mode decomposition and least square support vector machine (EEMD-LSSVM) based on Phase space reconstruction (PSR) is proposed for day-ahead PM2.5concentration prediction, according to the application of a decomposition-ensemble learning paradigm. The main methods of the proposed model mainly include: first, EEMD is presented to decompose the original data of PM2.5concentration into some intrinsic model functions (IMFs); second, PSR is applied to determine the input form of each extracted component; third, LSSVM, an effective forecasting tool, is used to predict all reconstructed components independently; finally, another LSSVM is employed to aggregate all predicted components into ensemble results for the final prediction. The empirical results show that this proposed model can outperform the comparison models and can significantly improve the prediction performance in terms of higher predictive and directional accuracy.
authors.affiliation: School of Mathematics and Statistics, Lanzhou University, Lanzhou 730000, China.
authors.forename: Mingfei
authors.initials: M
authors.lastname: Niu
authors.affiliation: School of Mathematics and Statistics, Lanzhou University, Lanzhou 730000, China. Electronic address: gank14@lzu.edu.cn.
authors.forename: Kai
authors.initials: K
authors.lastname: Gan
authors.affiliation: Institute of Systems Science, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100190, China. Electronic address: sunshl13@lzu.edu.cn.
authors.forename: Shaolong
authors.initials: S
authors.lastname: Sun
authors.affiliation: School of Mathematics and Computer Science, Ningxia Normal University, Guyuan 756000, China.
authors.forename: Fengying
authors.initials: F
authors.lastname: Li
mesh_terms: D000393:Air Pollutants; D005544:Forecasting; D006801:Humans; D016018:Least-Squares Analysis; D052638:Particulate Matter
chemical_list: D000393:Air Pollutants; D052638:Particulate Matter
keywords: Decomposition-ensemble learning paradigm; EEMD; LSSVM; PM(2.5) concentration forecasting; PSR