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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.
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 fundamental prevalence-independent statistics are sensitivity and specificity.. Sensitivity or True Positive Rate (TPR), also known as recall, is the proportion of people that tested positive and are positive (True Positive, TP) of all the people that actually are positive (Condition Positive, CP = TP + FN).
PPV is best understood by comparison to two other approaches where a penalty is applied for risk: The risk-adjusted rate of return applies a risk-penalty by increasing the discount rate when calculating the Net Present Value (NPV); The certainty equivalent approach does this by adjusting the cash-flow numerators of the NPV formula.
This is a list of All Elite Wrestling pay-per-view events, detailing all wrestling shows promoted on pay-per-view (PPV) by All Elite Wrestling (AEW). The formation of AEW was announced on January 1, 2019, [ 1 ] [ 2 ] with the promotion holding its inaugural event, Double or Nothing , which doubled as its inaugural PPV event, on May 25. [ 3 ]
This is a list of events held by the American professional wrestling promotion Total Nonstop Action Wrestling (TNA) on pay-per-view (PPV) and on streaming services. [1]From its inception, TNA's main output was a two-hour weekly program broadcast exclusively on pay-per-view.
The company's PPV lineup expanded to a monthly basis in the mid-1990s following the introduction of the In Your House series of pay-per views before expanding even further in the mid-2000s during the first WWE brand extension. In addition, WWE produced international PPVs not available in the United States between 1997 and 2003.
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