An SOM-Based Decoding Algorithm for Multi-class SVM
Xiaoyan Tao, Hongbing Ji · 2006
How to process multi-class problem with SVM is one of the present research focuses. In general, the classification process for the multi-class SVM includes two parts: the encoding and decoding strategy. Specially, we address the decoding problem which concerns how to map the outputs into class codewords. In this paper an SOM-based decoding algorithm for multi-class SVM is presented, which directly use the output magnitude to classify the data in combination with the nonlinearity and topological ordering of the SOM. The experiments on the Yale and ORL face databases show the advantage of the new method over the widely-used Hamming decoding scheme