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Environmental research v.160, 2018년, pp.269 - 281   SCI SCIE
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A hybrid wavelet de-noising and Rank-Set Pair Analysis approach for forecasting hydro-meteorological time series

Wang, Dong    (Key Laboratory of Surficial Geochemistry, MOE, Department of Hydrosciences, School of Earth Sciences and Engineering, Collaborative Innovation Center of South China Sea Studies, State Key Laboratory of Pollution Control and Resource Reuse, Nanjing University, Nanjing, PR China   ); Borthwick, Alistair G.    (School of Engineering, The University of Edinburgh, Edinburgh EH9 3JL, UK   ); He, Handan    (Key Laboratory of Surficial Geochemistry, MOE, Department of Hydrosciences, School of Earth Sciences and Engineering, Collaborative Innovation Center of South China Sea Studies, State Key Laboratory of Pollution Control and Resource Reuse, Nanjing University, Nanjing, PR China   ); Wang, Yuankun    (Key Laboratory of Surficial Geochemistry, MOE, Department of Hydrosciences, School of Earth Sciences and Engineering, Collaborative Innovation Center of South China Sea Studies, State Key Laboratory of Pollution Control and Resource Reuse, Nanjing University, Nanjing, PR China   ); Zhu, Jieyu    (Key Laboratory of Surficial Geochemistry, MOE, Department of Hydrosciences, School o  ); Lu, Yuan   Xu, Pengcheng   Zeng, Xiankui   Wu, Jichun   Wang, Lachun   Zou, Xinqing   Liu, Jiufu   Zou, Ying   He, Ruimin  
  • 초록  

    Abstract Accurate, fast forecasting of hydro-meteorological time series is presently a major challenge in drought and flood mitigation. This paper proposes a hybrid approach, wavelet de-noising (WD) and Rank-Set Pair Analysis (RSPA), that takes full advantage of a combination of the two approaches to improve forecasts of hydro-meteorological time series. WD allows decomposition and reconstruction of a time series by the wavelet transform, and hence separation of the noise from the original series. RSPA, a more reliable and efficient version of Set Pair Analysis, is integrated with WD to form the hybrid WD-RSPA approach. Two types of hydro-meteorological data sets with different characteristics and different levels of human influences at some representative stations are used to illustrate the WD-RSPA approach. The approach is also compared to three other generic methods: the conventional Auto Regressive Integrated Moving Average (ARIMA) method, Artificial Neural Networks (ANNs) (BP-error Back Propagation, MLP-Multilayer Perceptron and RBF-Radial Basis Function), and RSPA alone. Nine error metrics are used to evaluate the model performance. Compared to three other generic methods, the results generated by WD-REPA model presented invariably smaller error measures which means the forecasting capability of the WD-REPA model is better than other models. The results show that WD-RSPA is accurate, feasible, and effective. In particular, WD-RSPA is found to be the best among the various generic methods compared in this paper, even when the extreme events are included within a time series. Highlights A new hybrid approach is proposed to improve forecasts of hydro-meteorological time series. Rank-Set Pair Analysis combined with wavelet de-noising markedly improves forecasting accuracy. The performance of the proposed approach proves best among its present competitors even when the extreme value occurs.


  • 주제어

    Data-driven model .   Forecasting .   Hydro-meteorological series .   Rank-Set Pair Analysis .   Wavelet de-noising.  

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