Computing Accuracy Precision And Recall

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Computing Accuracy Precision And Recall

  1. 1. Calculating Accuracy, Precision and Recall PREDICTION true false true REALITY a b false c d (a+d) accuracy: “what percent of the prediction were correct?” (a+b+c+d) (a) precision: “what percent of positive predictions were correct?” (a+c) (a) recall: “what percent of positive cases were caught?” (a+b) Samstag, 19. Januar 2008 1

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