A hybrid model coupled with singular spectrum analysis for daily rainfall prediction

Kwok Wing Chau, C. L. Wu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

243 Citations (Scopus)

Abstract

A hybrid model integrating artificial neural networks and support vector regression was developed for daily rainfall prediction. In the modeling process, singular spectrum analysis was first adopted to decompose the raw rainfall data. Fuzzy C-means clustering was then used to split the training set into three crisp subsets which may be associated with low-, medium- and high-intensity rainfall. Two local artificial neural network models were involved in training and predicting low- and medium-intensity subsets whereas a local support vector regression model was applied to the high-intensity subset. A conventional artificial neural network model was selected as the benchmark. The artificial neural network with the singular spectrum analysis was developed for the purpose of examining the singular spectrum analysis technique. The models were applied to two daily rainfall series from China at 1-day-, 2-day- and 3-day-ahead forecasting horizons. Results showed that the hybrid support vector regression model performed the best. The singular spectrum analysis model also exhibited considerable accuracy in rainfall forecasting. Also, two methods to filter reconstructed components of singular spectrum analysis, supervised and unsupervised approaches, were compared. The unsupervised method appeared more effective where nonlinear dependence between model inputs and output can be considered.
Original languageEnglish
Pages (from-to)458-473
Number of pages16
JournalJournal of Hydroinformatics
Volume12
Issue number4
DOIs
Publication statusPublished - 1 Oct 2010

Keywords

  • Artificial neural network
  • Daily rainfall prediction
  • Fuzzy c-means
  • Hybrid models
  • Singular spectral analysis
  • Support vector regression

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Atmospheric Science

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