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作者：Cai, TX; Pepe, MS
作者单位：University of Washington; University of Washington Seattle
摘要：The receiver operating characteristic (ROC) curve is a popular method for characterizing the accuracy of diagnostic tests when test results are not binary. Various methodologies for estimating and comparing ROC curves have been developed. One approach, due to Pepe, uses a parametric, regression model ROCx(u) = g(h(0)(u) +0(0)'x) with the baseline function h(0)(u) specified up to a finite-dimensional parameter. In this article we extend the regression models by allowing arbitrary nonparametric ...
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作者：Ozturk, O
作者单位：University System of Ohio; Ohio State University
摘要：The use of statistical methods based on ranked-set sampling can lead to a substantial improvement over analog methods associated with simple random sampling schemes. This article develops a rank-based estimator and testing procedures for linear models for ranked-set samples. The estimator is defined as the minimizer of the rank dispersion function with Wilcoxon scores. It is shown that the estimator of the regression parameter is asymptotically normal and has higher Pitman asymptotic efficienc...
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作者：van de Wiel, MA
作者单位：Eindhoven University of Technology
摘要：Computation of exact p values of multiple comparisons rank statistics is often a very time-consuming task. In some cases approximations are available, but they are often unsatisfactory when samples are small or the number of ties is large. Some existing tables of exact critical values contain errors and are limited to small samples without ties and to Wilcoxon scores. Therefore, this article proposes a new algorithm to compute exact p values of generalized Steel statistics for one-way classifi...
