Some comments on error correcting output codes

Authors:
Kyung Ha Seok;Daehyeon Cho
Affiliations:
Department of Data Science, Institute of Statistical Information, Inje University, Kyungnam, Korea;Department of Data Science, Institute of Statistical Information, Inje University, Kyungnam, Korea
Venue:
FSKD'06 Proceedings of the Third international conference on Fuzzy Systems and Knowledge Discovery
Year:
2006

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Abstract

Error Correction Output Codes (ECOC) can improve generalization performance when applied to multiclass problems. In this paper, we compared various criteria used to design codematrices. We also investigated how loss functions affect the results of ECOC. We found that there was no clear evidence of difference between the various criteria used to design codematrices. The One Per Class (OPC) codematrix with Hamming loss yields a higher error rate. The error rate from margin based decoding is lower than from Hamming decoding. Some comments on ECOC are made, and its efficacy is investigated through empirical study.