I don't think we know, yet. The system was only in place a day before the earthquake. The fact that it worked is a nice smoke test, but tells us nothing about false positives nor false negatives.
I don't think we know, yet. The system was only in place a day before the earthquake. The fact that it worked is a nice smoke test, but tells us nothing about false positives nor false negatives.
We could know the false positive rate, if it’s been generating a bunch of these alerts but only recently happened to be right.