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Old 03-03-2013, 02:23 AM
foodcomazzz foodcomazzz is offline
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Join Date: Jan 2013
Posts: 5
Default Re: SVM classifier One-vs-One and One-Vs-All clarification

Originally Posted by View Post
I don't understand the question correctly here. For one-vs-one should we pick 2 digits (e.g. 1 and 2) and make them +1 and -1 and rest of the data ignore and try the classification and repeat the exercise for 1,2 1,3 1,4 etc. That would be 10C2 combination. Also for one-vs-all should we do the same but instead of ignoring all the data should we make them all -1?

Then how do we classify 4-vs-all etc.? Really appreciate some help here.
So for the one-vs-one case, do we randomly pick 2 digits and try the classification, or do we need to average the classification error over all possible combination of 2 digits?
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