[1]YANG Jing-yu,ZHENG Yu-jie.Discriminant dimensionality reduction based on QR decomposition and its application in face recognition[J].CAAI Transactions on Intelligent Systems,2007,2(6):48-53.
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CAAI Transactions on Intelligent Systems[ISSN 1673-4785/CN 23-1538/TP] Volume:
2
Number of periods:
2007 6
Page number:
48-53
Column:
学术论文—机器感知与模式识别
Public date:
2007-12-25
- Title:
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Discriminant dimensionality reduction based on QR decomposition and its application in face recognition
- Author(s):
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YANG Jing-yu; ZHENG Yu-jie
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Department of Computer Science, Nanjing University of Science & Technology, Nan jing 210094,China
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- Keywords:
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discriminant dimensionality reduction; pattern recognition; QR decomposition; di rect linear discriminant analysis (DLDA)
- CLC:
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TP391.4
- DOI:
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- Abstract:
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Dimensionality reduction is an important research topic in pattern recognition. At present, partial dimensionality reduction methods lack an effective discrimin ant information preservation mechanism. And the small sample size problem often occurs when the Fisher discriminant criterion is used. In this paper, discrimina nt information preservation is briefly presented and a new direct lnear discrim inant analysis (DLDA) method, the DLDA/QR algorithm, is suggested. With this algo rithm, the objective function is optimized through QR decomposition, and then th e ef fective discriminant information is extracted from a smaller space. Experimental results from the ORL face database demonstrate the effectiveness of the propose d method.