How to calculate accuracy from confusion matrix?
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How to calculate accuracy from confusion matrix?
1 Comment
darova
on 30 May 2019
Im confused a little bit. What do you mean?
Answers (1)
Rik
on 30 May 2019
0 votes
Accuracy = (TP+TN)/(TP+TN+FP+FN)
where: TP = True positive; FP = False positive; TN = True negative; FN = False negative
As you can find on Wikipedia ( https://en.m.wikipedia.org/wiki/Accuracy_and_precision )
So it should be trivial to calculate the accuracy from your confusion matrix: divide the sum of the diagonal by the total sum.
3 Comments
Shivalika Singh
on 22 Apr 2024
how to calculate sensiticity and ppv??
Shivalika Singh
on 22 Apr 2024
sensitivity**
Rik
on 23 Apr 2024
Did you check Wikipedia for a formula?
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