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Grey-based approach for estimating Weibull model and its application

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  • Xiaomei Liu
  • Naiming Xie

Abstract

Weibull distribution is widely used in engineering because of its flexibility to take on many different shapes. For different application fields, people put forward different estimation methods, including grey estimation method. The purpose of this paper is to improve the existing grey estimation method of Weibull distribution as its some serious shortcomings. Firstly, a grey three-parameter Weibull model is proposed in a discrete form. Then, by means of the grey Weibull model, a two-stage hybrid method for estimating the three-parameter Weibull distribution is proposed, which is composed of the linear and nonlinear least square principles. To demonstrate the feasibility of the proposed grey Weibull model, a simulation study was conducted and compared the results with the modified MLE method, and a comparison study on the frequency analysis of four breakdown data sets of epoxy resins is also carried out. Moreover, as a practical application, Weibull model based on the grey estimation approach is applied to the frequency analysis of monthly wind speed of Hohhot in 2018, and compared with a series of existing estimation methods. Results show that the proposed grey Weibull estimation improves the existing grey estimation and can be well applied to the frequency analysis of Weibull data.

Suggested Citation

  • Xiaomei Liu & Naiming Xie, 2023. "Grey-based approach for estimating Weibull model and its application," Communications in Statistics - Theory and Methods, Taylor & Francis Journals, vol. 52(21), pages 7601-7617, November.
    • Handle: RePEc:taf:lstaxx:v:52:y:2023:i:21:p:7601-7617
    DOI: 10.1080/03610926.2022.2050397
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    Cited by:

    1. Chang, Ping-Chen, 2024. "A path-based simulation approach for multistate flow network reliability estimation without using boundary points," Reliability Engineering and System Safety, Elsevier, vol. 249(C).

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