Local Stability Analysis of Maximum Nongaussianity Estimation in Independent Component Analysis

  • Gang Wang
  • Xin Xu
  • Dewen Hu
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3971)


The local stability analysis of maximum nongaussianity estimation (MNE) is investigated for nonquadratic functions in independent component analysis (ICA). Using trigonometric function, we first derive the local stability condition of MNE for nonquadratic functions without any approximation as has been made in previous literatures. The research shows that the condition is essentially the generalization of Xu’s one-bit-matching ICA theorem in MNE. Secondly, based on the generalized Gaussian model (GGM), the availability of local stability condition and robustness to outliers are addressed for three typical nonquadratic functions for various distributed independent components.


Independent Component Analysis Local Stability Independent Component Analysis Blind Source Separation Independent Component Analysis Algorithm 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Gang Wang
    • 1
    • 2
  • Xin Xu
    • 2
  • Dewen Hu
    • 2
  1. 1.Telecommunication Engineering InstituteAir Force Engineering UniversityXi’anP.R.C.
  2. 2.College of Mechatronics and AutomationNational University of Defense TechnologyChangshaP.R.C.

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