Thus, Vq is a function only of The decision threshold is therefore a [Pg.277]

ISO, Determination of the detection limit and decision threshold for ionizing radiation measurements Part 3, ISO. 2000, ISO 11929-3 2000. [Pg.94]

ISO 11929 2010, Determination of the characteristic limits (decision threshold, detection limit, and limits of the confidence interval) for measurements of ionizing radiation - fundamentals and application. Reviewed 2014. Available from the ISO store, link http //www.iso.org/iso/catalogue detail.htm csnumber=43810. [Pg.48]

Hg). The combined standard uncertainty is given within brackets/ Decision thresholds are given according to ISOJ Reference date June 1, 2005 [Pg.90]

Figure 8. Sensitivity, specificity, and positive discovery rate as a function of decision threshold the two reference lines correspond to two decision thresholds. The rates are estimated from predictions made for molecules not in the training set of the model. |

Let / denote predicted by the model to be inactive and I denote observed to be inactive in the assay by exceeding the decision threshold , with analogous definitions for A, predicted to be a hit , and A, observed to be a hit . With the null hypothesis that a compound is inactive, we have [Pg.91]

The logistic regression model can be used in a classification problem by assigning the class into one of the two classes according to the predicted value. The default decision threshold uses 0.5 to predict class membership, but it can be adjusted to reflect prior probabilities, for example, i/(no + i). where n,- is a sample size in class i. The decision mle assigns a subject to class 1 if y > 0.5 and to class 0 if y < 0.5, where y is the fitted value. [Pg.133]

Figure 15-2 Receiver operating characteristic curve of prostate-specific antigen (PSA). Each point on the curves represents a different decision level.The sensitivity (true-positive rate) and I— the specificity (false-positive rate) can be read for Tests A and B. The true-positive and false-positive rates are demonstrated using 4 and IO Xg/L as decision thresholds. |

Specific IgE Assay. Two radioimmunoassays are available in France using a quaternary ammonium compoimd coupled to Sepharose [30, 31]. The sensitivity of these tests was equivalent at 88%, the specificity reaches 90%. A morphine-based immunoassay has been proposed in Australia [14]. More recently, Ebo et al. [32] investigated a rocuronium ImmimoCAP and set the sensitivity at 85%, the specificity being absolute, provided an assay-specific decision threshold is applied. An ImmimoCAP (Phadia A) is available. [Pg.187]

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