4 ms·
Bias and inaccuracy are two different ways to get things wrong. Briefly, bias is the wrong mean, and inaccuracy is high variance.
by skj 7y ago
Bias and inaccuracy are two different ways to get things wrong.
Briefly, bias is the wrong mean, and inaccuracy is high variance.
- smadge 7y agoThanks! That clarifies the distinction.
- m0zg 7y agoAnd what people also don't realize is machine learning system will get massively more accurate over time, and its accuracy landscape will generally follow the distribution of the training set. Academic training sets this is typically bootstrapped on are very different from what you'd encounter in the US criminal justice system, but as the system is fed real data it can get crazy good at what it does. Superhuman accuracy facial recognition systems have existed for a while now. Humans just aren't that good at matching faces, and it's not like humans are bias-free either.
- learnstats2 7y agoThere is an entirely different mean number of false positive stops. So, by your statistical definition, there's a bias.