Hazard rate ordering;
Reliability systems;
Samaniego's signature;
Minimal and maximal signatures;
OUT-OF-N;
REVERSED HAZARD RATE;
COHERENT SYSTEMS;
K SYSTEMS;
SIGNATURE;
D O I:
10.1007/s11009-014-9433-4
中图分类号:
O21 [概率论与数理统计];
C8 [统计学];
学科分类号:
020208 ;
070103 ;
0714 ;
摘要:
In this article we present several results pertaining to the stochastic comparison of the lifetimes of two reliability systems with exchangeable components. More specifically, we provide signature-based sufficient and necessary conditions for establishing hazard rate and reverse hazard rate orderings. Finally, focusing on the class of consecutive-type systems, we illustrate how the general results can be exploited to deduce several stochastic orderings among members of this class.