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The positive predictive value (PPV), or precision, is defined as = + = where a "true positive" is the event that the test makes a positive prediction, and the subject has a positive result under the gold standard, and a "false positive" is the event that the test makes a positive prediction, and the subject has a negative result under the gold standard.
Pay-per-view (PPV) is a type of pay television or webcast service that enables a viewer to pay to watch individual events via private telecast.. Events can be purchased through a multichannel television platform using their electronic program guide, an automated telephone system, or through a live customer service representative.
Pay-per-view (PPV) services are similar to subscription-based pay television services in that customers must pay to have the broadcast decrypted for viewing, but usually only entail a one-time payment for a single or time-limited viewing. Programs offered via pay-per-view are most often movies or sporting events, but may also include other ...
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).
The Positive predictive value (PPV) of a test is the proportion of persons who are actually positive out of all those testing positive, and can be calculated from a sample as: PPV = True positive / Tested positive. If sensitivity, specificity, and prevalence are known, PPV can be calculated using Bayes' theorem.
Pars plana vitrectomy, a common ocular surgery procedure; Parts per volume, a unit of volume mixing ratio; Plum pox virus, a plant virus; Pneumococcal polysaccharide vaccine, a pneumococcal vaccine
The template for any binary confusion matrix uses the four kinds of results discussed above (true positives, false negatives, false positives, and true negatives) along with the positive and negative classifications.
This is a list of WWE pay-per-view (PPV) and livestreaming supercards, detailing all professional wrestling cards promoted by the American promotion available on traditional PPV outlets and livestreaming services such as the WWE Network and Netflix.