Optimal Estimation of Shear Strength Parameters Based on Copula Theory Coupling Information Diffusion Technique
Joint Authors
Zhou, Xinlong
Zhang, Guang
Hu, Shaohua
Li, Junzhe
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-18, 18 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-05-26
Country of Publication
Egypt
No. of Pages
18
Main Subjects
Abstract EN
In geotechnical reliability analysis, random volatility in marginal distributions of shear strength parameters has been rarely considered.
Unfortunately, conventional marginal distribution models cannot characterize real probability distribution accurately, leading to considerable dispersion with incomplete probabilistic information.
In this paper, an estimation methodology is proposed based on copula theory coupling information diffusion technique.
Firstly, information diffusion distribution is extended to represent one-dimensional marginal distributions of shear strength parameters.
Secondly, copula theory is employed to characterize the dependence structures among the parameters.
Eventually, equivalent sample is yielded by information diffusion distribution that has been already established.
A case study in Singapore is implemented to enunciate and validate the competence of the proposed method.
The performances of the candidate copulas coupling different marginal distributions are further discussed.
Results indicate that information diffusion distribution can efficiently capture the random volatility of real distributions of shear strength parameters and hold remarkable superiority in modeling marginal distributions.
The equivalent sample, estimated by information diffusion technique in conjunction with Gaussian copula, has considerable consistency with original data.
The proposed method can provide a reference to reliability analysis in geotechnical engineering.
American Psychological Association (APA)
Zhou, Xinlong& Zhang, Guang& Hu, Shaohua& Li, Junzhe. 2019. Optimal Estimation of Shear Strength Parameters Based on Copula Theory Coupling Information Diffusion Technique. Advances in Civil Engineering،Vol. 2019, no. 2019, pp.1-18.
https://search.emarefa.net/detail/BIM-1117405
Modern Language Association (MLA)
Zhou, Xinlong…[et al.]. Optimal Estimation of Shear Strength Parameters Based on Copula Theory Coupling Information Diffusion Technique. Advances in Civil Engineering No. 2019 (2019), pp.1-18.
https://search.emarefa.net/detail/BIM-1117405
American Medical Association (AMA)
Zhou, Xinlong& Zhang, Guang& Hu, Shaohua& Li, Junzhe. Optimal Estimation of Shear Strength Parameters Based on Copula Theory Coupling Information Diffusion Technique. Advances in Civil Engineering. 2019. Vol. 2019, no. 2019, pp.1-18.
https://search.emarefa.net/detail/BIM-1117405
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1117405