faster perfcurve (just in case you use FPR and TPR)

Did you notice perfcurve is slow? This version of perfcurve is faster
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Updated 10 Jun 2013

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This version is identical to the one provided by matlab with a small change if "FPR" or "TPR" are used for X and Y.
Instead of using the tedious "arrayfun" I used vector cumsum functions.

Here is a test for comparison
N = 1e5;
score = [rand(N,1); rand(N,1)-1];
label = [ones(N,1); zeros(N,1)];

tic;
perfcurve(label, score, 1);
toc
tic;
perfcurve2(label, score,1);
toc

Elapsed time is 17.614076 seconds.
Elapsed time is 0.164707 seconds.

I hope you will find it useful.

Cite As

Hanan Shteingart (2024). faster perfcurve (just in case you use FPR and TPR) (https://www.mathworks.com/matlabcentral/fileexchange/42154-faster-perfcurve-just-in-case-you-use-fpr-and-tpr), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2012b
Compatible with any release
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Version Published Release Notes
1.0.0.0