title: How to combine False positives and false negatives into one single measure
body: <p>I'am trying to measure the performance of a computer vision program that tries to detect objects in video. I have 3 different versions of the program which have different parameters.
  I've benchmarked each of this versions and got 3 pairs of (False positives percent, False negative percent).  </p>
  
  <p>Now i want to compare the versions with each other and then I wonder if it makes sense to combine false positives and false negatives into a single value and use that to do the comparation. for example, take the equation falsePositives/falseNegatives and see which is smaller.</p>