电子学报2017，Vol.45Issue(11)：2779-2786,8.DOI:10.3969/j.issn.0372-2112.2017.11.027
带拒绝域的ECOC多类分类
Design of Reject Option for Multi-classification Based on ECOC
摘要
Abstract
Aiming at reducing misclassification costs,this paper studies the design of reject options for ECOC multi-classification based on its properties.The first level of reject option is constructed in the process of bipartitions to recognize an instance whose real labels does not belong to the meta-subclasses.Meanwhile,the second reject rule is presented in the dichotomizers based on posterior probabilities and cost matrix to make the minimum-risk Bayesian decision.Finally,different decoding strategies are analysed according to different reject output.The relationship between the number of rejected positions and the minimum Hamming distance of matrix is discussed.The two-stage reject rule makes the ECOC multi-classification with rejection come true and reduce the misclassification error and costs.关键词
多类分类/纠错输出编码/拒绝域/支持向量数据描述/贝叶斯决策Key words
multi-classification/error-correcting output codes/rejection option/support vector domain description/Bayesian decision分类
信息技术与安全科学引用本文复制引用
雷蕾,王晓丹,罗玺,王玮..带拒绝域的ECOC多类分类[J].电子学报,2017,45(11):2779-2786,8.基金项目
国家自然科学基金(No.61273275,No.61503407) （No.61273275,No.61503407）
