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Erscheinungsjahr: 
2011
Schriftenreihe/Nr.: 
SFB 649 Discussion Paper No. 2011-080
Verlag: 
Humboldt University of Berlin, Collaborative Research Center 649 - Economic Risk, Berlin
Zusammenfassung: 
Sparse non-Gaussian component analysis (SNGCA) is an unsupervised method of extracting a linear structure from a high dimensional data based on estimating a low-dimensional non-Gaussian data component. In this paper we discuss a new approach to direct estimation of the projector on the target space based on semidefinite programming which improves the method sensitivity to a broad variety of deviations from normality. We also discuss the procedures which allows to recover the structure when its effective dimension is unknown.
Schlagwörter: 
dimension reduction
non-Gaussian components analysis
feature extraction
JEL: 
C14
Dokumentart: 
Working Paper

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