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Predicting Ocean Surge: Optimized Ensembles of Data-Driven Chaos-Based Models in Phase Space

Author(s): M. Siek; D. P. Solomatine

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Keywords: Chaos theory; Ensembles; Neural network; Ocean surge; North Se

Abstract: A problem of forecasting ocean surge based on high-frequency data on surge is considered. A technique based on optimized model ensembles in high-dimensional phase space is presented. Time-delayed phase space is built using the principles of chaos theory. The forecasts are made in this space by the adaptive local data-driven multi-models based on the neighbors of the current vector. The method is tested to make forecasts of storm surge for the North Sea. The results show that the multi-model ensemble model has a higher accuracy compared to a standard chaotic model or a single data-driven model.

DOI:

Year: 2011

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