期刊
CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS
卷 96, 期 1, 页码 22-26出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.chemolab.2008.11.006
关键词
Circle; Ellipse; Outlier; Scores; Multiplicative scatter correction; MSC; Standard normal variate; SNV; Imaging spectroscopy
类别
资金
- Junta de Andalucia
The spectral pre-treatments known as standard normal variate (SNV) and multiplicative scatter correction (MSC) often give very similar results, and are widely regarded as exchangeable. However their geometry in spectral space is not the same, and the results of this are sometimes apparent. SNV has the capacity to induce curved structures in score plots derived from the treated spectra, whilst MSC has a tendency to produce outliers in these plots. These phenomena are illustrated with an example from a near infrared imaging camera, and explained geometrically. (C) 2008 Elsevier B.V. All rights reserved.
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