Hazard rate comparison of parallel systems with heterogeneous gamma components
Hazard rate comparison of parallel systems with heterogeneous gamma components
复制标题
具有异构伽马分量的并行系统的危险率比较
DOI:
10.1016/j.jmva.2011.05.001
复制
发表时间:
2013
影响因子:
1.6
通讯作者:
赵鹏
中科院分区:
文献类型:
--
作者:
Balakrishnan, N.;赵鹏
We compare the hazard rate functions of the largest order statistic arising from independent heterogeneous gamma random variables and that arising from i.i.d. gamma random variables. Specifically, let X1,…,Xnbe independent gamma random variables with Xihaving shape parameter 0<r≤1 and scale parameter λi, i=1,…,n. Denote by Yn:nthe largest order statistic arising from i.i.d. gamma random variables Y1,…,Ynwith Yihaving shape parameter r and scale parameter [Formula: see text] , the geometric mean of λi′s. It is shown that Xn:nis stochastically larger than Yn:nin terms of hazard rate order. The result derived here strengthens and generalizes some of the results known in the literature and leads to a sharp upper bound on the hazard rate function of the largest order statistic from heterogeneous gamma variables in terms of that of the largest order statistic from i.i.d. gamma variables. A numerical example is finally provided to illustrate the main result established here.
登录
查看更多内容
影响因子:
1.6
作者:
Eugen Pltnea
通讯作者:
Eugen Pltnea
影响因子:
1.6
作者:
Balakrishnan, N.;Zhao, Peng;Li, Xiaohu
通讯作者:
Li, Xiaohu
影响因子:
0.8
作者:
N. Balakrishnan
通讯作者:
N. Balakrishnan
DOI:
--
发表时间:
1998
期刊:
--
影响因子:
--
作者:
N. Balakrishnan;Calyampudi R. Rao
通讯作者:
N. Balakrishnan;Calyampudi R. Rao
影响因子:
3.6
作者:
T. M. Williams;J. Rustagi
通讯作者:
T. M. Williams;J. Rustagi