Crammer K,Singer Y.On the learn-ability and design of output codes for multi-class problem[C]// Proceedings of the Thirteenth Annual Conference on Computational Learning Theory.San Francisco:Morgan Kaufmann,2000:35~46.
[6]
Hsu C W,Lin C J.A Comparison of methods for multi-class support vector machines[J].IEEE Transaction on Neural Networks,2002,13(2):415~425.