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Improved runoff forecasting based on time-varying model averaging method and deep learning

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  • Jinlou Ran
  • Yang Cui
  • Kai Xiang
  • Yuchen Song

Abstract

In order to improve the accuracy and stability of runoff prediction. This study proposed a dynamic model averaging method with Time-varying weight (TV-DMA). Using this method, an integrated prediction model framework for runoff prediction was constructed. The framework determines the main variables suitable for runoff prediction through correlation analysis, and uses TV-DMA and deep learning algorithm to construct an integrated prediction model for runoff. The results demonstrate that the current monthly runoff, the runoff of the previous month, the current monthly temperature, the temperature of the previous month and the current monthly rainfall were the variables suitable for runoff prediction. The results of runoff prediction show that the TV-DMA model has the highest prediction accuracy (with 0.97 Nash-efficiency coefficient (NSE)) and low uncertainty. The interval band of uncertainty was 33.3%-65.5% lower than single model. And the prediction performance of the single model and TV-DMA model in flood season is obviously lower than that in non-flood season. In addition, this study indicate that the current monthly runoff, rainfall and temperature are the important factor affecting the runoff prediction, which should be paid special attention in the runoff prediction.

Suggested Citation

  • Jinlou Ran & Yang Cui & Kai Xiang & Yuchen Song, 2022. "Improved runoff forecasting based on time-varying model averaging method and deep learning," PLOS ONE, Public Library of Science, vol. 17(9), pages 1-20, September.
    • Handle: RePEc:plo:pone00:0274004
    DOI: 10.1371/journal.pone.0274004
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    References listed on IDEAS

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    3. Yin, X.A. & Yang, Z.F., 2011. "Development of a coupled reservoir operation and water diversion model: Balancing human and environmental flow requirements," Ecological Modelling, Elsevier, vol. 222(2), pages 224-231.
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