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In this confusion matrix, of the 8 samples with cancer, the system judged that 2 were cancer-free, and of the 4 samples without cancer, it predicted that 1 did have cancer. All correct predictions are located in the diagonal of the table (highlighted in green), so it is easy to visually inspect the table for prediction errors, as values outside ...
[1] There are different definitions within laboratory quality control , wherein "analytical sensitivity" is defined as the smallest amount of substance in a sample that can accurately be measured by an assay (synonymously to detection limit ), and "analytical specificity" is defined as the ability of an assay to measure one particular organism ...
The basic marginal ratio statistics are obtained by dividing the 2×2=4 values in the table by the marginal totals (either rows or columns), yielding 2 auxiliary 2×2 tables, for a total of 8 ratios. These ratios come in 4 complementary pairs, each pair summing to 1, and so each of these derived 2×2 tables can be summarized as a pair of 2 ...
In a classification task, the precision for a class is the number of true positives (i.e. the number of items correctly labelled as belonging to the positive class) divided by the total number of elements labelled as belonging to the positive class (i.e. the sum of true positives and false positives, which are items incorrectly labelled as belonging to the class).
In this confusion matrix, of the 8 cat pictures, the system judged that 2 were dogs, and of the 4 dog pictures, it predicted that 1 was a cat. All correct predictions are located in the diagonal of the table (highlighted in bold), so it is easy to visually inspect the table for prediction errors, as they will be represented by values outside ...
Appealing to the all-day breakfast crowd, Cracker Barrel's sunrise pancake special starts at $7.99 and is available around the clock. It includes two buttermilk pancakes and a choice of two eggs ...
For the fourth quarter, which UPS reported on Thursday morning, the company's earnings per share of $2.75 topped Wall Street's expectations of $2.53. And its US domestic operating margin of 10.1% ...
This article is part of The D.C. Brief, TIME’s politics newsletter. Sign up here to get stories like this sent to your inbox. The pitch was as plausible as it was persuasive: a second term for ...