IMPROVED SURROGATE-BASED OPTIMIZATION OF A MARINE ECOSYSTEM MODEL USING RESPONSE CORRECTION

M. Prieß, S. Koziel, T. Slawig

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%.

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Paper Citation


in Harvard Style

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 - Volume 1: SDDOM, (SIMULTECH 2011) ISBN 978-989-8425-78-2, pages 449-457. DOI: 10.5220/0003597704490457


in Bibtex Style

@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 - Volume 1: SDDOM, (SIMULTECH 2011)},
year={2011},
pages={449-457},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003597704490457},
isbn={978-989-8425-78-2},
}


in EndNote Style

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