Review of Chemometrics Applied to Spectroscopy: 1985-95, Part 2 |
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Authors: | Paul R Mobley Bruce R Kowalski Jerome J Workman JR Rasmus Bro |
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Institution: | 1. Laboratory for Chemometrics The University of Washington, Dept. of Chemistry , Seattle, WA, 98105, U.S.A. E-mail: mobley@cpac.washington.edu;2. Analytical Science &3. Technology Kimberly-Clark Corporation , 2100 Winchester Road, Neenah, Wisconsin, 54956, U.S.A.;4. Food Technology Chemometrics Group, Dep. Dairy and Food Science , Rolighedsvej 30, 1958, Frederiksberg. C, Denmark |
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Abstract: | INTRODUCTION Before beginning Part 2 of this review, a caveat noted by Deming and Palasota is brought to the reader's attention: 1] “Press et al. 2] have emphasized that data ‘consist of numbers, of course. But these numbers are fed into the computer, not produced by it. These are numbers to be treated with considerable respect, never to be tampered with, nor subjected to a numerical process whose character you do not completely understand. You are well advised to acquire reverence for data that is rather diferent fiom the “sporty” attitude which is sometimes allowable, or even commendable, in other numerical tasks.’ Yet by and large within chemometrics, preprocessing often seems to be carried out with little understanding of its fundamental efect on the structure of the data.” |
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