The density ratio model based estimator of the Gini coefficient and hypothesis testing on this basis are introduced to nuclear safety field to measure the homogeneity of buffer barriers.The asymptotic theory involved in hypothesis testing is discussed.In addition to analysis by the Wald-type test,a valid Bootstrap process is designed to improve power.The above mentioned methods are applied to real data of the curing method called film covering storage method.The results suggest that film covering storage method can effectively protect the buffer barrier from becoming more inhomogeneous.
关键词
Gini系数/密度比模型/自助法检验/核安全
Key words
Gini coefficient/density ratio model/bootstrap test/nuclear safety
万方数据