how to calculate precision and recall in MATLAB?

how to calculate precision and recall in MATLAB?is there any builtin function for this

[James Tursa]

Can you elaborate? I don't understand the question. MATLAB by default uses double precision, but it also has a single precision type available. There is also extended precision available with vpa from the Symbolic Toolbox.

[sa mi]

i am talking about simple precision and recall calculation in matlab precision= relevent retrivae/total retrive recall=relevent retrive/total relevent how to code it in matlab?

[sa mi]

r u there???

Answer 1

[Salma Hassan]

[Xpr,Ypr,Tpr,AUCpr] =perfcurve(targets, scores, 1, 'xCrit', 'reca', 'yCrit', 'prec');

plot(Xpr,Ypr)

xlabel('Recall'); ylabel('Precision')

title(['Precision-recall curve (AUC: ' num2str(AUCpr) ')'])

****************or you can use these equations

p=tp/(tp+fp);

r= tp/(tp+fn);

F= ( 2*p*r)/(p+r);