Precision and Recall

Jan. 26, 2018, 6:15 p.m.

I find myself often forgetting precision and recall, and which one is which. So I am writing this blog post to remind myself, and hopefully help other people too.

Let's start with some Venn diagrams that illustrate the target labels and our predicted labels.

Image of venn diagram

And the following figures will illustrate how those sections of the Venn diagram relate to accuracy, precision, and recall.

Image of accuracy

Image of Precision

Image of recall


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