Nonparametric Measures of Angular-Linear Association
提出了角变量与线性变量之间关联的一般模型，开发了类似Kendall tau的U统计量来度量这种关联，并比较了其性能。
General models of association between an angular and a linear variable, corresponding to monotone association between two linear variables, are proposed; U-statistics which are analogues of Kendall's tau are developed to measure such association, their distributions obtained, and their performances compared with other measures of angular-linear association.