Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10420006 | Reliability Engineering & System Safety | 2005 | 8 Pages |
Abstract
This paper reports the robustness of the four proportional intensity (PI) models: Prentice-Williams-Peterson-gap time (PWP-GT), PWP-total time (PWP-TT), Andersen-Gill (AG), and Wei-Lin-Weissfeld (WLW), for right-censored recurrent failure event data. The results are beneficial to practitioners in anticipating the more favorable engineering application domains and selecting appropriate PI models. The PWP-GT and AG prove to be models of choice over ranges of sample sizes, shape parameters, and censoring severity. At the smaller sample size (U=60), where there are 30 per class for a two-level covariate, the PWP-GT proves to perform well for moderate right-censoring (Pcâ¤0.8), where 80% of the units have some censoring, and moderately decreasing, constant, and moderately increasing rates of occurrence of failures (power-law NHPP shape parameter in the range of 0.8â¤Î´â¤1.8). For the large sample size (U=180), the PWP-GT performs well for severe right-censoring (0.8
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Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
S.T. Jiang, T.L. Landers, T.R. Rhoads,