> I presume that the context of those accuracy numbers is prediction for the next period (i.e. 8 minutes, 10 minutes, 1 minute).
That's not a context. That's the statistic they're calculating.
> To me 60% sounds good, but apparently not to people in this thread :)
What does "good" mean, and compared to what? If you can't put a number on "good" you're flying blind.
But hey, I'm just trying to warn people that the maths are garbage here; but if that looks good enough for you go ahead and trade it.