• analysis showed
  • AUC of ROC analysis showed that drain pancreatic enzyme measurement POD 6 was the most appropriate diagnostic criterion for postoperative PF (Fig 1). (nih.gov)
  • ROC analysis showed that the best cut-off for PCT in discriminating Enterobacteriaceae from nonfermentative Gram-negative bacteria was 3.1 ng/mL, with 90% sensitivity and 91% PPV (Figure 4). (nih.gov)
  • Detection
  • The ROC curve was first developed by electrical engineers and radar engineers during World War II for detecting enemy objects in battlefields and was soon introduced to psychology to account for perceptual detection of stimuli. (wikipedia.org)
  • optimal
  • ROC analysis provides tools to select possibly optimal models and to discard suboptimal ones independently from (and prior to specifying) the cost context or the class distribution. (wikipedia.org)
  • In the multivariate module one can choose between three different techniques - SVM (support vector machine), PLS-DA (partial least squares discriminant analysis) and Random Forests for classifying and selecting metabolites or clinical variables for an optimal ROC performance. (wikipedia.org)
  • performance
  • Examining a detector's ROC curves provides insight into its performance. (mathworks.com)
  • ROC analysis since then has been used in medicine, radiology, biometrics, forecasting of natural hazards, meteorology, model performance assessment, and other areas for many decades and is increasingly used in machine learning and data mining research. (wikipedia.org)
  • values
  • One feature of the rocsnr function is that you can specify a vector of SNR values and rocsnr calculates the ROC curve for each of these SNR values. (mathworks.com)
  • test
  • Use a ROC Curve to choose the most appropriate 'cut-off' for a test. (qimacros.com)
  • The closer the curve follows the left-hand border and then the top border of the ROC space, the more accurate the test. (unmc.edu)
  • A ROC curve starts at the (0,0) coordinate representing the case when all test results are negative and ends at (1,1) coordinate, representing that all test results are positive. (smart-statistics.com)
  • equivalent
  • An alternative approach is to define the Gini coefficient as half of the relative mean absolute difference, which is mathematically equivalent to the Lorenz curve definition. (wikipedia.org)
  • space
  • A ROC space is defined by FPR and TPR as x and y axes, respectively, which depicts relative trade-offs between true positive (benefits) and false positive (costs). (wikipedia.org)
  • accuracy
  • Unfortunately, I did not go over other properties such as linear correlation with accuracy , pareto optimality and relationships with the calibration curve . (jxieeducation.com)