The purpose of this paper is to establish the stochastic comparisons of order statistics from two samples in the sense of likelihood ratio order. We strengthen and complement some results in Zhao and Balakrishnan (2012) and Ding et al. (2013).

The concept of generalized order statistics was introduced as a unified approach to a variety of models of ordered random variables. The purpose of this paper is to present some further results on univariate stochastic comparisons of generalized order statistics under the more general...

A number of studies have used data envelopment analysis (DEA) to evaluate the performance of the countries in Olympic Games. While the fact that numbers of three kinds of medal must only take integer values is ignored. This study discusses, by means of integer-valued DEA model, the performance...