Graduate Thesis Or Dissertation
 

A quadratic programming routine for the statistical analysis of gas chromatographic data

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/kp78gk29p

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  • A quadratic programming method was developed for the statistical analysis of gas chromatographic data. The method was applied to three types of flavor extracts, peppermint, hops and brewed tea. The brewed tea data had to be abandoned because of the singularity of its coveriance matrix. In all cases tried the method was able to pick the exact origin of a pure hop or peppermint oil. The method was able to classify blends of hop oils with less than five percent absolute error for hypothetical blended values in proportions from zero to 100 percent of the whole. The results for blends of peppermint oils were not as straightforward. Some blends of peppermint were correctly classified with less than a ten percent absolute error over a greater composition range than others. When one three component blend and one four component blend of the peppermint oil were tried the method classified them correctly. The method can be applied to any problem in which more than one parameter is needed to produce a classification.
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