Chinese Optics Letters, Volume. 6, Issue 8, 558(2008)

Shrinkage-divergence-proximity locally linear embedding algorithm for dimensionality reduction of hyperspectral image

Qin Luo1, Zheng Tian1,2, and Zhixiang Zhao1
Author Affiliations
  • 1Department of Applied Mathematics, Northwestern Polytechnical University, Xi’an 710072
  • 2State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101
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    Existing manifold learning algorithms use Euclidean distance to measure the proximity of data points. However, in high-dimensional space, Minkowski metrics are no longer stable because the ratio of distance of nearest and farthest neighbors to a given query is almost unit. It will degrade the performance of manifold learning algorithms when applied to dimensionality reduction of high-dimensional data. We introduce a new distance function named shrinkage-divergence-proximity (SDP) to manifold learning, which is meaningful in any high-dimensional space. An improved locally linear embedding (LLE) algorithm named SDP-LLE is proposed in light of the theoretical result. Experiments are conducted on a hyperspectral data set and an image segmentation data set. Experimental results show that the proposed method can efficiently reduce the dimensionality while getting higher classification accuracy.

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    Qin Luo, Zheng Tian, Zhixiang Zhao. Shrinkage-divergence-proximity locally linear embedding algorithm for dimensionality reduction of hyperspectral image[J]. Chinese Optics Letters, 2008, 6(8): 558

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    Paper Information

    Received: Sep. 29, 2007

    Accepted: --

    Published Online: Sep. 2, 2008

    The Author Email:

    DOI:10.3788/COL20080608.0558

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