Abstract
This study provides evidence supporting the use of the update strategies for the support vector regression (SVR) model. Firstly, the fitting and interpolation method (FIM) is presented to select SVR parameters, and three infill strategies are adopted to search for update points. Secondly, the infill strategy and parameter selection method are illustrated by test functions that illustrate their dependability. The distribution of update points, the sample density and the proportion of update points are discussed. Finally, the adaptive SVR surrogate model is applied to optimize the protective effect of railway wind barriers. The result shows that the parameter selection method has high stability. On the whole, the accuracy of the adaptive SVR model using a suitable infill strategy will be improved with an increasing proportion of update points if the final number of training points is identical. The optimization result shows an optimal porosity of 0.117 when the height of the railway wind barrier is 2.05 m (full scale).
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Acknowledgements
The writers are grateful for the financial support from the National Natural Science Foundation of China (51408503, U1334201, 51525804), the Fundamental Research Funds for the Central Universities (2682014BR049) and the Sichuan Province Youth Science and Technology Innovation Team (15CXTD0004).
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Xiang, H., Li, Y., Liao, H. et al. An adaptive surrogate model based on support vector regression and its application to the optimization of railway wind barriers. Struct Multidisc Optim 55, 701–713 (2017). https://doi.org/10.1007/s00158-016-1528-9
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DOI: https://doi.org/10.1007/s00158-016-1528-9