Statistical analysis of Rayleigh competing risks model based on partially step stress Type-II censoring samples

摘要

This paper, discusses the problem of partially step-stress ALTs(accelerated life tests) form Rayleigh competing risks model.Type-II censored scheme is used in obtaining the observed censoringdata. The method of MLE (maximum likelihood estimation) of the modelparameters for point and approximate confidence intervals areconsidered. Also, bootstrap confidence intervals of model parametersare discussed. Simulation study is adopted to assess and compare ourproposed method. Finally, some comment to illustrate the behavior ofnumerical results.