# True Positive Classification

(Redirected from true positive)

A True Positive Classification is a binary classifier positive prediction that is a correct class prediction.

**AKA:**TP Outcome.**Context:**- It can be a member of a True Positive Classification Set (to calculate a true positive error rate).

**Counter-Example(s):****See:**True Positive Rate, Confusion Matrix, True Belief.

## References

### 2011

- (Sammut & Webb, 2011) ⇒ Claude Sammut, and Geoffrey I. Webb. (2011). “True Positive.” In: (Sammut & Webb, 2011) p.999

### 2006

- (Fawcett, 2006) ⇒ Tom Fawcett. (2006). “An Introduction to ROC Analysis.” In: Pattern Recognition Letters, 27(8). doi:10.1016/j.patrec.2005.10.010
- QUOTE: Given a classifier and an instance, there are four possible outcomes. If the instance is positive and it is classified as positive, it is counted as a
*true positive*; if it is classified as negative, it is counted as a*false negative*. If the instance is negative and it is classified as negative, it is counted as a*true negative*; if it is classified as positive, it is counted as a*false positive*. Given a classifier and a set of instances (the test set), a two-by-two*confusion matrix*(also called a contingency table) can be constructed representing the dispositions of the set of instances.

- QUOTE: Given a classifier and an instance, there are four possible outcomes. If the instance is positive and it is classified as positive, it is counted as a