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Chemometrics - Avoiding pitfalls
Keep your eyes and mind open
- Know your subject as well as you can.
- At very least, have very close access to someone who does.
- The decision processes in the inquiry phase require at least as much
chemical/technical input as statistical knowledge.
- Monitor characterized systems for changes.
- The results of your analysis assume that unmeasured variables are
constant or unimportant. This can cease to be true at any time after your
analysis. For instance, a change in blending techniques or proportions
might invalidate future whiskey results.
Checks are needed to guarantee continued model validity.
This is especially true in industry.
- Don't become too fond of any one technique.
- Each technique has strengths and weaknesses.
- The use of complementary techniques minimizes weaknesses.
- Overreliance on any technique makes the process more vulnerable to mistakes.
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