Sharma, Alokanand and Paliwal, K.K. (2010) Improved nearest centroid classifier with shrunken distance measure for null LDA method on cancer classification problem. Electronics Letters, 46 (18). pp. 1251-1252. ISSN 0013-5194
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Abstract
Null linear discriminant analysis (LDA) is a well-known dimensionality reduction technique for the small sample size problem. When the null LDA technique projects the samples to a lower dimensional space, the covariance matrices of individual classes become zero, i.e. all the projected vectors of a given class merge into a single vector. In this case, only the nearest centroid classifier (NCC) can be applied for classification. To improve the classification performance of NCC in the reduced-dimensional space, a shrunken distance based NCC technique is proposed that uses class-conditional a priori probabilities for distance computation. Experiments on several DNA microarray gene expression datasets using the proposed technique show very encouraging results for cancer classification.
Item Type: | Journal Article |
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Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
Divisions: | Faculty of Science, Technology and Environment (FSTE) > School of Engineering and Physics |
Depositing User: | Ms Mereoni Camailakeba |
Date Deposited: | 29 Nov 2010 19:41 |
Last Modified: | 18 Jul 2012 02:09 |
URI: | https://repository.usp.ac.fj/id/eprint/1918 |
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