Hisashi Kashima Satoshi Oyama Yoshihiro Yamanishi Koji Tsuda On Pairwise Kernels: An Efficient Alternative and Generalization Analysis. 1030-1037 2009 PAKDD http://dx.doi.org/10.1007/978-3-642-01307-2_110 conf/pakdd/2009 db/conf/pakdd/pakdd2009.html#KashimaOYT09