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The area under the receiver operating characteristic (ROC) curve is often used to summarize and compare the discriminatory accuracy of a diagnostic test or modality, and to evaluate the predictive power of statistical models for binary outcomes. Parametric maximum likelihood methods for fitting...
Persistent link: https://www.econbiz.de/10009442283
lead to improved treatment and thus reduce medical mistakes. The sensitivity and specificity are two important measurements … confidence interval for the sensitivity at a fixed level of specificity for the test. In this thesis, we propose three empirical … likelihood intervals for the sensitivity. Simulation studies are conducted to compare the empirical likelihood based confidence …
Persistent link: https://www.econbiz.de/10009463421
of sensitivity and specificity for all the possible values of the cut-point. This dissertation concentrates on …
Persistent link: https://www.econbiz.de/10009480799
Sensitivity and specificity are common measures of the accuracy of a diagnostic test. The usual estimators of these … connecting the (sensitivity, 1? specificity) points at each cutpoint of the test using step functions and/or line segments. This …, possibly depending on the result of the diagnostic test and other characteristics of the subjects. Estimators of sensitivity …
Persistent link: https://www.econbiz.de/10009482975
assessing scoring systems. Its principle is to simulate virtual data using a stochastic model and, then, to estimate sensitivity … and specificity values from these data for different scoring systems. The interest of our approach was illustrated in a …
Persistent link: https://www.econbiz.de/10009483617
transactionattributes, that is, asset specificity, transaction frequency, and uncertainty. The research is based on the theoretical …
Persistent link: https://www.econbiz.de/10009443804
Immer mehr Unternehmen intensivieren vor dem Hintergrund zunehmender Komplexität sowie technologischer und wettbewerblicher Dynamik ihre Lieferanten- und Kundenbeziehungen bis hin zu engen Partnerschaften. Sie sehen diese als Voraussetzung für dauerhaft wirkende Wettbewerbsvorteile an.// Mit...
Persistent link: https://www.econbiz.de/10009467182
Human and earth systems are extremely complex processes. The modeling of these systems to assess the effects of climate change is an activity fraught with uncertainty. System models typically involve the linking of a series of computer codes, each of which is a detailed model of some physical or...
Persistent link: https://www.econbiz.de/10009435379
might evolve on a regional basis considering the sensitivity of the break-even cost to four major drivers: technical …
Persistent link: https://www.econbiz.de/10009435869
revenues. We also consider two sensitivity scenarios that examine (1) the effect of changes in MISO membership (2003 vs. 2004 …
Persistent link: https://www.econbiz.de/10009435948