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pro vyhledávání: '"Robert F. Wagner"'
Publikováno v:
Computational Statistics & Data Analysis. 53:4370-4383
In the problem of binary classification (or medical diagnosis), the classification rule (or diagnostic test) produces a continuous decision variable which is compared to a critical value (or threshold). Test values above (or below) that threshold are
A Framework for Random-Effects ROC Analysis: Biases with the Bootstrap and Other Variance Estimators
Publikováno v:
Communications in Statistics - Theory and Methods. 38:2586-2603
In this article, we analyze the three-way bootstrap estimate of the variance of the reader-averaged nonparametric area under the receiver operating characteristic (ROC) curve. The setting for this work is medical imaging, and the experimental design
Autor:
Robert F. Wagner
Publikováno v:
Medical Physics. 34:4944-4951
A favorite cliche, often attributed to Yogi Berra, is “Prediction is difficult, especially about the future!” In this brief review, we shall recall some historical difficulties in predicting the future of diagnosticmedicalimaging—in particular,
Publikováno v:
Academic Radiology. 14:723-748
This article reviews the central issues that arise in the assessment of diagnostic imaging and computer-assist modalities. The paradigm of the receiver operating characteristic (ROC) curve--the dependence of the true-positive fraction versus the fals
Publikováno v:
IEEE Transactions on Pattern Analysis and Machine Intelligence. 28:1809-1817
This paper considers binary classification. We assess a classifier in terms of the Area Under the ROC Curve (AUC). We estimate three important parameters, the conditional AUC (conditional on a particular training set) and the mean and variance of thi
Publikováno v:
Pattern Recognition Letters. 26:2600-2610
This article considers the problem of binary classification and its assessment in a distribution-free approach. We estimate the area under the ROC curve (a more general performance metric than the error rate) of a classifier using a bootstrap-based e
Publikováno v:
Medical Decision Making. 24:561-572
The multiple-reader, multiple-case (MRMC) approach to receiver operating characteristic (ROC) analysis is becoming the dominant assessment paradigm in medical imaging. Its most common version involves having many readers read every patient case in th
Autor:
Sergey V. Beiden, Stephen L. Hillis, Hae Hiang Song, Kevin S. Berbaum, Robert F. Wagner, Hemant Ishwaran, Nancy A. Obuchowski
Publikováno v:
Academic Radiology. 11:980-995
Rationale and objectives Several statistical methods have been developed for analyzing multireader, multicase (MRMC) receiver operating characteristic (ROC) studies. The objective of this article is to increase awareness of these methods and determin
Autor:
Samuel G. Armato, David Gur, Berkman Sahiner, J W Sayre, Nicholas Petrick, Geoffrey McLennan, Michael F. McNitt-Gray, Robert F. Wagner, Heang Ping Chan, Sergey V. Beiden, Lori E. Dodd, Charles E. Metz
Publikováno v:
Academic Radiology. 11:462-475
Cancer of the lung and bronchus is the leading fatal malignancy in the United States. Five-year survival is low, but treatment of early stage disease considerably improves chances of survival. Advances in multidetector-row computed tomography technol
Publikováno v:
Academic Radiology. 9:1264-1277
In the last 2 decades major advances have been made in the field of assessment methods for medical imaging and computer–assist systems through the use of the paradigm of the receiver operating characteristic (ROC) curve. In the most recent decade t