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EMBDSYMPLEC: MATLAB function to determine embedding dimension based on symplectic geometry

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Author Info

  • Shapour Mohammadi

    ()
    (University of Tehran)

Abstract

Determination of embedding dimension based on symplectic geometry. Let X be lag matrix of y, A=X'X, and A(n) is (n-1) times transformed form of A by Householder matrix. If descending sorted eigenvalues A(n) tend to be constant for dimension d+1 then d is the proper embedding dimension. let sigma be square of eigenvalues of A matrix, sigma1=(lambda^2)max,Ö,sigman=(lambda^2)min,where n is the dimension of X. If sigma1>sigma2>Ö>sigmad>sigma(d+1)>=...>=sigman, then d is the embedding dimension of the reconstruction system(Lei et al. 2002). The dimension before horizontal section of log(sigmai/tr(sigmai))plot is the proper dimension.

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File URL: http://fmwww.bc.edu/repec/bocode/e/embdsymplec.m
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Bibliographic Info

Software component provided by Boston College Department of Economics in its series Statistical Software Components with number T7415011.

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Programming language: MATLAB
Requires: MATLAB
Date of creation: 16 Jul 2009
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Handle: RePEc:boc:bocode:t741511

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