I think there must be something wrong in your program...
I got obj value -123.272410 on sonar_scale by hw7, and
-123.272410 by Dr. Lin's program for hw5.
I think you should think about the whole procedure again. :)
※ 引述《mercurial (多變)》之銘言：
: I run sonar data, and set c=1, r=1/60
: my hw5 program got -121,
: and there are many different values for alpha, such as 0, 1, 0.24...
: however, hw5 doesn't consider the constraint, sum(yi*alpha_i)=0
: my hw7 program got -193.
: again, I entered into infinite loop, but I stoped
: when the optimal value converges to a stable value.
: however, all the alpha equal to 0 or 1
: and sum(yi*alpha_i)=0
: that means the alpha satisify all the constraints
: I don't understand why adding one more
: constraint gets better optimal value.
: maybe my hw5 program is wrong.
: but my result of hw5 is the same with the professor's.
: I think I don't fully understand the whole procedure.
: I just copied down what the professor wrote on board, and
: implemented them to programs.
: that's why I couldn't figure out why I got such results.
: Is is because of bugs or because of
: the different rules of these two methods?
: I totally have no idea....