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Old 02-25-2013, 06:46 AM
apinde apinde is offline
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Join Date: Jul 2012
Posts: 12
Default Re: Odd results using LibSVM on Prob 8

Just wanted to close the loop. The cost parameter C was the culprit! When it is > ~50.0 then the results make sense and the number of SVs and alpha values stabilizes. Around C=15, the the number of SV's begins to increase and results get poorer. I think the comment that high C forces a hard margin solution is possibly the explanation. I noticed that at lower values of C the number of iterations used in getting a solution is also lower.

Thanks all.
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