Abstract Although usually taken as a symmetric measure, G is shown to be directional coefficient of association. The direction in not related rows or columns the cross-table nor identity variables predictor criterion variable but, instead, number categories scales. Under conditions where there are no tied pairs dataset, equals Somers’ D so directed that with wider scale ( X ) explains response ...

We generated exact probability distributions for sample sizes up to 35 in each of three groups ( 105 N  ) and up to 10 in each of four groups ( 40 N  ). We provided a portion of these exact probability tables and compared the exact distributions to the chi-square, gamma, and beta approximations. The beta approximation was best in terms of the root mean squared error. At specific significance ...

Owing to the inhomogeneity and ill defined edges present in images, the incorporation of prior knowledge into level set models, in image segmentation, is a field of active researches. In this paper, a new way of incorporating prior information to constrain the evolution of the level set model during the segmentation is presented. This technique allows resolving the problem of applying the same ...