[R] Is there a function for this?
hustqiufeng at sohu.com
Wed Jan 3 14:40:58 CET 2007
Hi everybody, I'm trying to do a statistic on the error rate of a prediction
suppose this is the real category
[good, good, bad, bad, good, good, bad, bad]
this is the predicted category
[good, bad, bad, bad, good, good, good, bad]
I'm trying to do a statistic on the error rate for each group("good","bad"):
what percentage of instances are predicted incorrectly for each group ?
Of course I can write a loop to do that, but is there a easy way to do that?
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