Kosuke Ishibashi Kohei Hatano Masayuki Takeda Online Learning of Maximum p-Norm Margin Classifiers with Bias. 69-80 2008 COLT http://colt2008.cs.helsinki.fi/papers/48-Ishibashi.pdf conf/colt/2008 db/conf/colt/colt2008.html#IshibashiHT08