A global sensitivity analysis method based on IBWO-SVR-SS
Purpose Aiming at the inefficiency of solving the Sobol index using the traditional mathematical analytical method, a Sobol global sensitivity analysis method is proposed. Design/methodology/approach In this paper, a support vector regression (SVR) surrogate model is constructed to solve the Sobol i...
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cremerald:10.1108/ijsi-04-2024-0055 2024-09-15T17:59:03+00:00 A global sensitivity analysis method based on IBWO-SVR-SS Cui, Yuxin Li, Yong-Hua Zhang, Dongxu Wang, Yufeng Zhang, Zhiyang 2024 http://dx.doi.org/10.1108/ijsi-04-2024-0055 https://www.emerald.com/insight/content/doi/10.1108/IJSI-04-2024-0055/full/xml https://www.emerald.com/insight/content/doi/10.1108/IJSI-04-2024-0055/full/html en eng Emerald https://www.emerald.com/insight/site-policies International Journal of Structural Integrity volume 15, issue 4, page 777-794 ISSN 1757-9864 journal-article 2024 cremerald https://doi.org/10.1108/ijsi-04-2024-0055 2024-08-21T04:05:53Z Purpose Aiming at the inefficiency of solving the Sobol index using the traditional mathematical analytical method, a Sobol global sensitivity analysis method is proposed. Design/methodology/approach In this paper, a support vector regression (SVR) surrogate model is constructed to solve the Sobol index. The optimal combination of SVR hyperparameters is obtained by using the improved beluga whale optimization (IBWO). Meanwhile, in order to solve the problem that Sobol sequences will form correlation regions in high-dimensional space leading to the uneven distribution of sampling points, a scrambled strategy is introduced in the Sobol sensitivity analysis using IBWO-SVR. Thus, the IBWO-SVR-SS sensitivity analysis model is established. Findings The results of two test functions show that the method further improves the accuracy of the sensitivity analysis. Finally, the first-order Sobol index and second-order Sobol index are solved by the IBWO-SVR-SS method using the metro bogie frame as an engineering example. Through the analysis results, the key design parameters of the frame and the design parameter combinations with more obvious coupling relationships are identified, providing a strong reference for the subsequent analysis and structural optimization. Originality/value Sobol sensitivity analysis using the surrogate model method can effectively improve the efficiency of the solution. In addition, IBWO is used for the optimization of the SVR hyperparameters to improve the accuracy and efficiency of the optimization, and finally, the correction of the Sobol sequence through the introduction of the disruption strategy also further improves the accuracy of the sensitivity analysis of Sobol. Article in Journal/Newspaper Beluga Beluga whale Beluga* Emerald International Journal of Structural Integrity 15 4 777 794 |
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English |
description |
Purpose Aiming at the inefficiency of solving the Sobol index using the traditional mathematical analytical method, a Sobol global sensitivity analysis method is proposed. Design/methodology/approach In this paper, a support vector regression (SVR) surrogate model is constructed to solve the Sobol index. The optimal combination of SVR hyperparameters is obtained by using the improved beluga whale optimization (IBWO). Meanwhile, in order to solve the problem that Sobol sequences will form correlation regions in high-dimensional space leading to the uneven distribution of sampling points, a scrambled strategy is introduced in the Sobol sensitivity analysis using IBWO-SVR. Thus, the IBWO-SVR-SS sensitivity analysis model is established. Findings The results of two test functions show that the method further improves the accuracy of the sensitivity analysis. Finally, the first-order Sobol index and second-order Sobol index are solved by the IBWO-SVR-SS method using the metro bogie frame as an engineering example. Through the analysis results, the key design parameters of the frame and the design parameter combinations with more obvious coupling relationships are identified, providing a strong reference for the subsequent analysis and structural optimization. Originality/value Sobol sensitivity analysis using the surrogate model method can effectively improve the efficiency of the solution. In addition, IBWO is used for the optimization of the SVR hyperparameters to improve the accuracy and efficiency of the optimization, and finally, the correction of the Sobol sequence through the introduction of the disruption strategy also further improves the accuracy of the sensitivity analysis of Sobol. |
format |
Article in Journal/Newspaper |
author |
Cui, Yuxin Li, Yong-Hua Zhang, Dongxu Wang, Yufeng Zhang, Zhiyang |
spellingShingle |
Cui, Yuxin Li, Yong-Hua Zhang, Dongxu Wang, Yufeng Zhang, Zhiyang A global sensitivity analysis method based on IBWO-SVR-SS |
author_facet |
Cui, Yuxin Li, Yong-Hua Zhang, Dongxu Wang, Yufeng Zhang, Zhiyang |
author_sort |
Cui, Yuxin |
title |
A global sensitivity analysis method based on IBWO-SVR-SS |
title_short |
A global sensitivity analysis method based on IBWO-SVR-SS |
title_full |
A global sensitivity analysis method based on IBWO-SVR-SS |
title_fullStr |
A global sensitivity analysis method based on IBWO-SVR-SS |
title_full_unstemmed |
A global sensitivity analysis method based on IBWO-SVR-SS |
title_sort |
global sensitivity analysis method based on ibwo-svr-ss |
publisher |
Emerald |
publishDate |
2024 |
url |
http://dx.doi.org/10.1108/ijsi-04-2024-0055 https://www.emerald.com/insight/content/doi/10.1108/IJSI-04-2024-0055/full/xml https://www.emerald.com/insight/content/doi/10.1108/IJSI-04-2024-0055/full/html |
genre |
Beluga Beluga whale Beluga* |
genre_facet |
Beluga Beluga whale Beluga* |
op_source |
International Journal of Structural Integrity volume 15, issue 4, page 777-794 ISSN 1757-9864 |
op_rights |
https://www.emerald.com/insight/site-policies |
op_doi |
https://doi.org/10.1108/ijsi-04-2024-0055 |
container_title |
International Journal of Structural Integrity |
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15 |
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4 |
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777 |
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794 |
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1810435996017229824 |