The dog has low precision and high recall. The dogs are capable of high precision and high recall, but aren't being trained to do that because other incentives

The dog has low precision and high recall. The dogs are capable of high precision and high recall, but aren't being trained to do that because other incentives are at play. I found it impressive that the dog that alerts 93% of the time was correct 40% of the time. That means the police are doing what seems like a good job of identifying targets that actually have drugs. With those kind of odds, you'd probably want to take a closer look at everyone just to make sure you aren't letting people with drugs get away (false negatives).