Journal
MATHEMATICAL AND COMPUTER MODELLING
Volume 58, Issue 3-4, Pages 801-807Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.mcm.2012.12.023
Keywords
Water quality prediction; Wavelet neural network; Wavelet analysis; BP neural network; Intensive pearl breeding
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Funding
- Guangdong Science and Technology Program [2012A020200008, 2011B040200034]
- Guangdong's Natural Science Foundation [S2012010008261]
- Zhanjiang Science and Technology Program [2010C3113011]
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Improved water quality prediction accuracy and reduced computational complexity are vital for ensuring a precise control over the water quality in intensive pearl breeding. This paper combined the wavelet transform with the BP neural network to build the short-term wavelet neural network water quality prediction model. The proposed model was used to predict the water quality of intensive freshwater pearl breeding ponds in Duchang county, Jiangxi province, China. Compared with prediction results achieved by the BP neural network and the Elman neural network, the mean absolute percentage error dropped from 17.464% and 8.438%, respectively, to 3.822%. The results show that the wavelet neural network is superior to the BP neural network and the Elman neural network. Furthermore, the proposed model features a high learning speed, improved predict accuracy, and strong robustness. The model can predict water quality effectively and can meet the management requirements in intensive freshwater pearl breeding. (C) 2012 Elsevier Ltd. All rights reserved.
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