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-   -   Do we need "b" in HW7.8? (http://book.caltech.edu/bookforum/showthread.php?t=518)

kurts 05-20-2012 01:34 PM

Do we need "b" in HW7.8?
 
Quadratic programming gives us alpha, which we use to calculate w, and we can use alpha to see how many support vectors there are, but is there any reason to calculate b?

lucag 05-20-2012 01:47 PM

Re: Do we need "b" in HW7.8?
 
Quote:

Originally Posted by kurts (Post 2248)
Quadratic programming gives us alpha, which we use to calculate w, and we can use alpha to see how many support vectors there are, but is there any reason to calculate b?

b is another name for w_0 ... I made the same mistake ;)

kurts 05-20-2012 02:39 PM

Re: Do we need "b" in HW7.8?
 
Thanks!

I forgot that this was discussed in the lecture as the second technicality on slide 20.


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