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  • Discriminant analysis  (1)
  • Rank-one updates  (1)
  • 1
    Electronic Resource
    Electronic Resource
    A method for detecting potentially unreliable estimates when using the Burdick/Rayens model for estimating linear mixing proportions (1988)
    New York, NY : Wiley-Blackwell
    Journal of Chemometrics 2 (1988), S. 121-136 
    Details
    ISSN: 0886-9383
    Keywords: Discriminant analysis ; Linear mixtures ; Residual vectors ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: In an earlier paper by Burdick and Rayens a model was developed which uses discriminant analysis to construct estimates of linear mixing proportions. In this paper a method is proposed for identifying potentially unreliable estimates when using the Burdick/Rayens model. It is also shown to be useful in detecting irregularities in the sample data. The methodology is based on the lengths of residual vectors and is demonstrated within the context of polychlorinated biphenyl mixtures.
    Additional Material: 13 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cem.1180020205
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    A role for covariance stabilization in the construction of the classical mixture surface (1990)
    New York, NY : Wiley-Blackwell
    Journal of Chemometrics 4 (1990), S. 159-169 
    Details
    ISSN: 0886-9383
    Keywords: Covariance stabilization ; Linear mixtures ; Cross-validation ; Rank-one updates ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Some well-established ideas from classical covariance stabilization and shrinkage estimation are extended to the context of physical mixtures through the use of a model developed by Burdick and Rayens. A cross-validation techique is proposed and associated computational issues are addressed. The methodology is evaluated in the context of real polychlorinated biphenyl data.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cem.1180040207
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    Paper (German National Licenses)
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