About the non-convex optimization problem induced by non-positive semidefinite kernel learning.

Ingo Mierswa Katharina Morik About the non-convex optimization problem induced by non-positive semidefinite kernel learning. 241-258 2008 2 Adv. Data Analysis and Classification 3 http://dx.doi.org/10.1007/s11634-008-0033-4 db/journals/adac/adac2.html#MierswaM08