Archimedean Copulas-Based Estimation under One-Parameter Distributions in Coherent Systems

Abstract

In the present work we provide a signature-based framework for delivering the estimated mean lifetime along with the variance of the continuous distribution of a coherent system consisting of exchangeable components. The dependency of the components is modelled by the aid of well-known Archimedean multivariate copulas. The estimated results are calculated under two different copulas, namely the so-called Frank copula and the Joe copula. A numerical experimentation is carried out for illustrating the proposed procedure under all possible coherent systems with three components.

Keywords

• moment estimator
• Frank copula
• Joe copula
• maximal signatures
• exchangeable components