Listar por autor "Yiannoutsos, C. T."
Mostrando ítems 1-3 de 3
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Accuracy and cut-off point selection in three-class classification problems using a generalization of the Youden index
Nakas, C. T.; Alonzo, T. A.; Yiannoutsos, C. T. (2010)We study properties of the index J(3), defined as the accuracy, or the maximum correct classification, for a given three class classification problem Specifically, using J(3) one can assess the discrimination between the ... -
Assessing multiple-group diagnostic problems with multi-dimensional receiver operating characteristic surfaces: Application to proton MR Spectroscopy (MRS) in HIV-related neurological injury
Yiannoutsos, C. T.; Nakas, C. T.; Navia, B. A.; Proton, M. R. S. Consortium (2008)We present the multi-dimensional Receiver Operating Characteristic (ROC) surface, a plot of the true classification rates of tests based on levels of biological markers, for multi-group discrimination, as an extension of ... -
A comparison of tests for restricted orderings in the three-class case
Alonzo, T. A.; Nakas, C. T.; Yiannoutsos, C. T.; Bucher, S. (2009)A variety of methods for comparing three distributions have been proposed in the literature. These methods assess the same null hypothesis of equal distributions but differ in the alternative hypothesis they consider. The ...