How to calculate accuracy from confusion matrix?

How to calculate accuracy from confusion matrix?

[darova]

Im confused a little bit. What do you mean?

Answer 1

[Rik]

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.

[Shivalika Singh]

how to calculate sensiticity and ppv??

[Shivalika Singh]

sensitivity**

[Rik]

Did you check Wikipedia for a formula?