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- W2898998161 abstract "This paper investigates the applicability of model emulation to speed up simulation time of CPU intensive environmental models. Polynomial chaos expansion (PCE) emulators are constructed for three case studies of increasing complexity. The level of emulator training and the order of polynomial necessary to sufficiently build accurate emulators for each model are investigated. Although the PCE emulators shown here do not approximate well the outputs of parameter rich models (80 + parameters), results demonstrate that the emulators mimic closely outputs of relatively simple, low dimensional, simulation models (15 parameters or less). Furthermore, the PCE emulators are tested with applications such as Global Sensitivity Analysis (GSA). Results illustrate the advantages and drawbacks of using classical PCE emulators for treating computational limitation of complex environmental models." @default.
- W2898998161 created "2018-11-09" @default.
- W2898998161 creator A5010377525 @default.
- W2898998161 date "2019-01-01" @default.
- W2898998161 modified "2023-10-17" @default.
- W2898998161 title "Emulation of environmental models using polynomial chaos expansion" @default.
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- W2898998161 doi "https://doi.org/10.1016/j.envsoft.2018.10.008" @default.
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