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Authors: M. Prieß 1 ; S. Koziel 2 and T. Slawig 1

Affiliations: 1 Christian-Albrechts Universität zu Kiel, Germany ; 2 Reykjavik University, Iceland

Keyword(s): Climate models, Marine ecosystem models, Surrogate-based optimization, Parameter optimization, Response correction.

Abstract: An improved surrogate-based optimization (SBO) methodology is developed for the optimization of climate model parameters. Our technique is based upon a multiplicative response correction technique to create a surrogate from a temporarily coarser discretized physics-based low-fidelity model. The original version of this methodology was successfully applied to calibration of a (one-dimensional) representative of a class of marine ecosystem models yielding about 84% computational cost savings when compared to the high-fidelity model optimization. Here, we demonstrate that by employing relatively simple modifications of the response correction scheme, the surrogate model accuracy and the efficiency of the optimization process can be further improved. More specifically, for the considered test case, the optimization cost is reduced three times when compared to the original technique, i.e., from about 15% to only 5% of the cost of the direct high-fidelity ecosystem model optimization (used as a benchmark method). The corresponding time savings are increased to 95%. (More)

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Paper citation in several formats:
Prieß, M.; Koziel, S. and Slawig, T. (2011). IMPROVED SURROGATE-BASED OPTIMIZATION OF A MARINE ECOSYSTEM MODEL USING RESPONSE CORRECTION. In Proceedings of 1st International Conference on Simulation and Modeling Methodologies, Technologies and Applications (SIMULTECH 2011) - SDDOM; ISBN 978-989-8425-78-2; ISSN 2184-2841, SciTePress, pages 449-457. DOI: 10.5220/0003597704490457

@conference{sddom11,
author={M. Prieß. and S. Koziel. and T. Slawig.},
title={IMPROVED SURROGATE-BASED OPTIMIZATION OF A MARINE ECOSYSTEM MODEL USING RESPONSE CORRECTION},
booktitle={Proceedings of 1st International Conference on Simulation and Modeling Methodologies, Technologies and Applications (SIMULTECH 2011) - SDDOM},
year={2011},
pages={449-457},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003597704490457},
isbn={978-989-8425-78-2},
issn={2184-2841},
}

TY - CONF

JO - Proceedings of 1st International Conference on Simulation and Modeling Methodologies, Technologies and Applications (SIMULTECH 2011) - SDDOM
TI - IMPROVED SURROGATE-BASED OPTIMIZATION OF A MARINE ECOSYSTEM MODEL USING RESPONSE CORRECTION
SN - 978-989-8425-78-2
IS - 2184-2841
AU - Prieß, M.
AU - Koziel, S.
AU - Slawig, T.
PY - 2011
SP - 449
EP - 457
DO - 10.5220/0003597704490457
PB - SciTePress

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