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Ahmadi, Jafar; Di Crescenzo, Antonio; Longobardi, Maria

On dynamic mutual information for bivariate lifetimes. (English) Zbl 1355.94022

Adv. Appl. Probab. 47, No. 4, 1157-1174 (2015).
Summary: We consider dynamic versions of the mutual information of lifetime distributions, with a focus on past lifetimes, residual lifetimes, and mixed lifetimes evaluated at different instants. This allows us to study multicomponent systems, by measuring the dependence in conditional lifetimes of two components having possibly different ages. We provide some bounds, and investigate the mutual information of residual lifetimes within the time-transformed exponential model (under both the assumptions of unbounded and truncated lifetimes). Moreover, with reference to the order statistics of a random sample, we evaluate explicitly the mutual information between the minimum and the maximum, conditional on inspection at different times, and show that it is distribution-free in a special case. Finally, we develop a copula-based approach aiming to express the dynamic mutual information for past and residual bivariate lifetimes in an alternative way.

Cited in 13 Documents

MSC:

94A17 Measures of information, entropy
62N05 Reliability and life testing
60E99 Distribution theory

Keywords:

entropy; mutual information; time-transformed exponential model; bivariate lifetimes; order statistics; copula
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Full Text: DOI arXiv Euclid

References:

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