Non-negative matrix factorization can select roughly 20 to 50 infrared filter pass bands that suffice to identify 40 volatile organic compounds down to about 1 to 2 parts per million in simulated absorption spectra.
Rosenthal , author W
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Sparse Infrared Spectroscopy for Detection of Volatile Organic Compounds
Non-negative matrix factorization can select roughly 20 to 50 infrared filter pass bands that suffice to identify 40 volatile organic compounds down to about 1 to 2 parts per million in simulated absorption spectra.