Research on runoff prediction based on wavelet transform and least squares support vector machines model
A new hybrid model that combines wavelet transform(WT) and least squares support vector machines(LSSVM) called the wavelet least squares support vector machines(WT-LSSVM) model is proposed and applied for runoff time series prediction. Time series of monthly runoff of Tangnaihai Station located in Y...
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Published in | 2014 12th International Conference on Signal Processing (ICSP) pp. 1469 - 1473 |
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Main Authors | , , , |
Format | Conference Proceeding |
Language | English |
Published |
IEEE
01.10.2014
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Subjects | |
Online Access | Get full text |
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Summary: | A new hybrid model that combines wavelet transform(WT) and least squares support vector machines(LSSVM) called the wavelet least squares support vector machines(WT-LSSVM) model is proposed and applied for runoff time series prediction. Time series of monthly runoff of Tangnaihai Station located in Yellow River upper stream were analyzed by the WT-LSSVM model. The observed time series are decomposed into sub-series using a discrete wavelet transform function and then an appropriate sub-series is used as input to the WT-LSSVM for forecasting hydrologic variables. The hybrid model (WT-LSSVM) was compared with the standard SVM model. The WT-LSSVM model is able to provide a good fit with the observed data. The benchmark results from WT-LSSVM model applications shows that the hybrid model produces better results than the standard SVM model in estimating hydrograph properties. |
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ISBN: | 9781479921881 1479921882 |
ISSN: | 2164-5221 |
DOI: | 10.1109/ICOSP.2014.7015243 |