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Mathematical Problems in Engineering
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2014
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Article
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Fig 4
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Research Article
Dimension Reduction Using Samples’ Inner Structure Based Graph for Face Recognition
Figure 4
The 2-dimensional visualization of the four algorithms on the ORL database. (a) SISG-LPP, (b) LPP, (c) NPE, and (d) PCA.
(a)
(b)
(c)
(d)