True positive, true negative, false positive, false negative concept Differentiation

Source: Internet
Author: User

See the table below.

True positive ---- the prediction is correct and positive;

True negative --- the prediction is correct and negative;

False Positive --- incorrect prediction. Positive prediction. (positive prediction is false)

False Negative ---- prediction error, negative prediction; (negative prediction by mistake)

Precision)

Predict the correct rate for rows with a predicted value of 1;

True positive/(true positive + false positive)

Recall (recall rate)

The correct rate is predicted for the column with an actual value of 1;

True positive/(true positive + false negative)

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