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Huh? Isn't that just clever accounting? 2% is still twice as much as 1%. If a black person and a white person each travel the same number of times, the black ca
by lopmotr 7y ago
Huh? Isn't that just clever accounting? 2% is still twice as much as 1%. If a black person and a white person each travel the same number of times, the black can still expect twice as many additional checks as the white, the same as before the improvement.
- SamReidHughes 7y agoNo, it’s the appropriate measure of ”unfairness.” If you designed a system where 5 black guys got misidentified but 1 white guy, out of the U.S. population, that would be far less unfair compared to 2%/1% despite the ratio being higher. And why did you pick that ratio to compare instead of 90%/80% vs. 99%/98%? The right means of comparison — for fairness — is the absolute difference in proportion. I don’t mean to imply that’s the right metric at all, of course, because it specially privileges minorities. The proper measure should equally weight the algorithm’s performance on all people in the population, or at least weight them irrespective of race. That’s just not a measure of fairness between races.