And false positive rates (dubbing a truthful person a liar) can be as high as 47%.

并且假阳性比率（误指一个诚实的人撒谎）可以高达47%。

It has a false positive rate of five percent.

它的误报率为百分之五。

While noting that most vessels shorter than 15m probably escaped their view, they estimated a false positive rate of less than 2% for those they did identify.

虽然他们注意到大多数小于15米的船只可能逃脱了他们的视线，但他们估计，那些被他们识别出来的船只误报率不到2%。