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Distance metric learning with penalized linear discriminant analysis

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3 Author(s)
Yang Chen ; State Key Lab. of Robot., CAS, Shenyang, China ; Xingang Zhao ; Jianda Han

Linear discriminant analysis has gained extensive applications in supervised classification and dimension reduction. In LDA formulation, original patterns with high dimension can be projected to lower dimension through a transfer matrix which is fundamental to clustering, nearest neighbor searches, and others. The transfer matrix is usually viewed as a distance metric. However, the classification accuracy under the LDA metric is neither optimal nor suboptimal because physical datasets often appear multimodal distribution. This paper proposes a penalized scheme for LDA to improve the classification rate by using the information of misclassified samples. This method is evaluated to be robust and effective by a great number of datasets from the machine learning repository.

Published in:

Progress in Informatics and Computing (PIC), 2010 IEEE International Conference on  (Volume:1 )

Date of Conference:

10-12 Dec. 2010

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