نتایج جستجو برای: receiver operator characteristic curve

تعداد نتایج: 404008  

Journal: :Journal of nuclear medicine : official publication, Society of Nuclear Medicine 1978
D A Turner

Journal: :hepatitis monthly 0
wandong hong department of gastroenterology and hepatology, the first affiliated hospital of wenzhou medical college, wenzhou, china jiansheng wu department of gastroenterology and hepatology, the first affiliated hospital of wenzhou medical college, wenzhou, china +86-13868465258, [email protected]; department of gastroenterology and hepatology, the first affiliated hospital of wenzhou medical college, wenzhou, china +86-13868465258, [email protected] xiangrong chen department of gastroenterology and hepatology, the first affiliated hospital of wenzhou medical college, wenzhou, china

2012
Kajal Lahiri Liu Yang

We propose serial correlation robust asymptotic confidence bands for the receiver operating characteristic (ROC) curves estimated by quasi-maximum likelihood in the binormal model. Our simulation experiments confirm that this new method performs fairly well in finite samples. The conventional procedure is found to be markedly undersized in terms of yielding empirical coverage probabilities lowe...

2006
Steven N. Thorsen Mark E. Oxley

A mathematical description of fusion is presented using category theory. A category of fusion rules is developed. The category definition is derived for a model of a classification system beginning with an event set and leading to the final labeling of the event. Functionals on receiver operating characteristic (ROC) curves are developed to form a partial ordering of families of classification ...

2012
Sudesh Pundir

ISSN 2277 5048 | © 2012 Bonfring Abstract--In recent years the Receiver Operating Characteristic (ROC) curves received much attention in medical diagnosis for classifying the subjects into one of the two groups. Many researchers have provided the mathematical formulation of the curve by assuming some specific distribution. Conventionally, much work has been carried out by assuming normal distri...

2003
Bernd Engelmann Evelyn Hayden Dirk Tasche Heinz Herrmann Thilo Liebig Karl-Heinz Tödter

Assessing the discriminative power of rating systems is an important question to banks and to regulators. In this article we analyze the Cumulative Accuracy Profile (CAP) and the Receiver Operating Characteristic (ROC) which are both commonly used in practice. We give a test-theoretic interpretation for the concavity of the CAP and the ROC curve and demonstrate how this observation can be used ...

2004
Seong Ho Park Jin Mo Goo Chan-Hee Jo

The receiver operating characteristic (ROC) curve, which is defined as a plot of test sensitivity as they coordinate versus its 1-specificity or false positive rate (FPR) as the x coordinate, is an effective method of evaluating the performance of diagnostic tests. The purpose of this article is to provide a nonmathematical introduction to ROC analysis. Important concepts involved in the correc...

2008
Andreas Westfeld

There are different approaches in the literature for the assessment of steganographic algorithms and steganalytic attacks. In the early papers it was considered sufficient to show the existence of an effect for one or a few examples only. The more the area of steganography evolved, the more diverse became the goals and the harder to measure the improvements. Many branches of science are facing ...

2010
Wilpen L. Gorr Matthew J. Schneider

This paper applies receiver operating characteristics (ROC) analysis to M3 Competition, micro monthly time series for one-month-ahead forecasts. Using the partial area under the curve (PAUC) criterion as a forecast accuracy measure and paired-comparison testing via bootstrapping, we find that complex methods (AutomatANN, Flores-Pearce2, Forecast ProSmart FCS, and Theta) perform best for forecas...

Journal: :Bioinformatics 2014
Natalia Novoselova Cristina Della Beffa Junxi Wang Jialiang Li Frank Pessler Frank Klawonn

UNLABELLED Receiver operating characteristic (ROC) analysis is usually applied in bioinformatics to evaluate the abilities of biological markers to differentiate between the presence or absence of a disease. It includes the derivation of the useful scalar performance measure area under the ROC curve for binary classification tasks. As real applications often deal with more than two classes, mul...

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