IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 7: Hydroinformatics : A new fast inundation model using support vector regression and modified linear interpolation
A new fast inundation model using support vector regression and modified linear interpolation
Author : Yang Liu and Gareth Pender
Full two dimensional (2D) hydrodynamic models have proven to be successful in a wide of applications. The limitation of using full 2D models is their expensive computational requirement. The flood risk analysis and model uncertainty analysis usually need to run the numerical model and evaluate the performance thousands of times. However, in real world applications, there is simply not enough time and resources to perform such a huge number of model runs. In this study, a computational framework, known as v-SVR-FGM / LI-FGM, is presented for solving computationally expensive simulation problems. The concept of v-SVR-FGM / LI-FGM will be demonstrated via a small number of fine grid model (FGM) runs using a nonlinear regression or modified linear interpolation. The approximation model is performed in predicting the form of results of FGM instead of running the time consuming FGM. This approach can substantially reduce computational running time without loss of accuracy of FGM. The simulation results suggest that the proposed method is able to achieve good predictive results (water depth and velocity) as well as provide considerable savings in computer time.
File Size : 562,280 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 7: Hydroinformatics
Date Published : 01/07/2011
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