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>60% really means very little if it's a binary choice - flu or no. You'll be right 50% of the times no mater what. What? Just because something is binary doesn
by moultano 16y ago
>60% really means very little if it's a binary choice - flu or no. You'll be right 50% of the times no mater what.
What? Just because something is binary doesn't mean it happens half the time.
- andrewljohnson 16y agoHmm, yeah... good point on that. I'll leave my comment, but I take it back :)
- anmol 16y agoWith severely unbalanced classes, overall accuracy is not a good metric. So we use recall of the symptom class, and how it varies with the precision. Recall = 0.6 to 0.9. All results are based on cross-validation. There is a lot more sophistication we can add (e.g. markov properties), these are almost first-order results. Nonetheless important to validate with other populations. That would be a big part of testing any product.