Gert R. G. Lanckriet Nello Cristianini Peter L. Bartlett Laurent El Ghaoui Michael I. Jordan Learning the Kernel Matrix with Semidefinite Programming. 27-72 2004 5 Journal of Machine Learning Research http://www.jmlr.org/papers/v5/lanckriet04a.html db/journals/jmlr/jmlr5.html#LanckrietCBGJ03