Passage method for nonlinear dimensionality reduction of data on multi-cluster manifolds

  • Authors:
  • Deyu Meng;Yee Leung;Zongben Xu

  • Affiliations:
  • Institute for Information and System Sciences and Ministry of Education Key Lab for Intelligent Networks and Network Security, Xi'an Jiaotong University, Xi'an 710049, PR China;Department of Geography and Resource Management, The Chinese University of Hong Kong, Hong Kong, PR China;Institute for Information and System Sciences and Ministry of Education Key Lab for Intelligent Networks and Network Security, Xi'an Jiaotong University, Xi'an 710049, PR China

  • Venue:
  • Pattern Recognition
  • Year:
  • 2013

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Abstract

Nonlinear dimensionality reduction of data lying on multi-cluster manifolds is a crucial issue in manifold learning research. An effective method, called the passage method, is proposed in this paper to alleviate the disconnectivity, short-circuit, and roughness problems ordinarily encountered by the existing methods. The specific characteristic of the proposed method is that it constructs a globally connected neighborhood graph superimposed on the data set through technically building the smooth passages between separate clusters, instead of supplementing some rough inter-cluster connections like some existing methods. The neighborhood graph so constructed is naturally configured as a smooth manifold, and hence complies with the effectiveness condition underlying manifold learning. This theoretical argument is supported by a series of experiments performed on the synthetic and real data sets residing on multi-cluster manifolds.