Talk:Support vector machine/Archives/2014


Does the solution lie at a saddle point?

The "Primal form" section says that "we look for a saddle point". Is this correct? What is thefunction that this is a saddle point of? Is it a saddle point of  ? It doesn't seem clear that this is even differentiable. The objective function (the norm squared of (w,b)) is positive semi-definite, so I don't think it has any saddle points.Vinzklorthos (talk) 01:37, 7 February 2014 (UTC)

Contradiction in primal form?

IMHO, the section on the determination of   at the end of the primal form section is unclear and seems contradictory. More precisely, the statement "the b depends on y_i and x_i" does not seem to follow from anything previously said. On the contrary, the previous statement "From this one can derive that the support vectors also satisfy ..." refers to a single value of   and   for which the given equations hold.

Veryltdbeard (talk) 11:11, 27 October 2014 (UTC)