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| Local Marginal Discriminant Analysis for Face Recognition |
| Li Zi-rong;Du Ming-hui |
| College of Electronic and Information Engineering, South China University of Technology, Guangzhou 510641, China |
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Abstract A novel dimensionality reduction method called Local Marginal Discriminant Analysis (LMDA) is proposed in this paper based on spectral graph theory and manifold learning. Based on Neighborhood Preserving Projections (NPP), the reconstruction distortion in the intra-class caused by linear projections is minimized, and at the same time the integrity of the Laplacian matrix of the intra-class graph is kept, and ‘margin’ between inter-class and intra-class is also maximized by constructing a weighted ‘compactness’ nearest-neighbor graphs and a counterpart ‘penalty’ graph. Finally, the numerical experimental results compared to other methods show that LMDA outperforms NPP.
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Received: 15 October 2007
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2009, Vol. 31 
