• Chinese Optics Letters
  • Vol. 6, Issue 8, 558 (2008)
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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    DOI: 10.3788/COL20080608.0558 Cite this Article Set citation alerts
    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 Copy Citation Text show less

    Abstract

    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.
    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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