Boots – shoes – and leggings
Patent
1991-07-11
1992-06-09
Dixon, Joseph L.
Boots, shoes, and leggings
364554, 250339, G01F 1546
Patent
active
051213389
ABSTRACT:
A method for using spectral analysis to detect subpopulations is disclosed. According to this method, a training set of spectra of a first plurality of samples is obtained and a bootstrap distribution is formed. A test set of spectra of a second plurality of samples is then obtained and a second bootstrap distribution is formed. First and second univariate distributions are then formed from the bootstrap distributions. A quantile-quantile relationship of the training and test sets is then developed and a determination of whether the test set and training set are substantially identical is made. The plurality of test samples are thus used to calculate probability density contours inside a training-set spectral cluster and detect perturbations of those contours using a bootstrap procedure. False samples are detected as subclusters well inside the training set, and trace analyses using a very small number of wavelengths are facilitated.
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Dixon Joseph L.
Indiana University Foundation
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