Improved locally linear embedding through new distance computing

  • Authors:
  • Heyong Wang;Jie Zheng;Zhengan Yao;Lei Li

  • Affiliations:
  • Software Research Institute, Sun Yat-sen University, Guangzhou, China;College of Mathematics and Computational Science, Sun Yat-sen University, Guangzhou, China;College of Mathematics and Computational Science, Sun Yat-sen University, Guangzhou, China;Software Research Institute, Sun Yat-sen University, Guangzhou, China

  • Venue:
  • ISNN'06 Proceedings of the Third international conference on Advances in Neural Networks - Volume Part I
  • Year:
  • 2006

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Abstract

Locally linear embedding (LLE) is one of the methods intended for dimensionality reduction, which relates to the number K of nearest-neighbors points to be initially chosen. So, in this paper, we want that the parameter K has little influence on the dimension reduction, that is to say, the parameter K can be widely chosen while not influence the effect of dimension reduction. Therefore, we propose a method of improved LLE, which uses new distance computing for weight of K nearest-neighbors points in LLE. Thus, even when the number K is little, the improved LLE can get good results of dimension reduction, while the traditional LLE needs a larger number of K to get the same results. When the number K of the nearest neighbors gets larger, test in this paper has proved that the improved LLE can still get correct results.