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Design of Experiments - US Army Conference on Applied Statistics

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Resp<strong>on</strong>se Surface Methodology<br />

• The physical mechanism is almost always unknown and must<br />

be approximated, usually with a low-order polynomial<br />

• Polynomial approximati<strong>on</strong>:<br />

• first-order model<br />

• sec<strong>on</strong>d-order model<br />

y 0 1x1 2x2 2 2<br />

y 0 1x1 2x2 12x1 x2 11x1 22x2 • Once the approximating model is fit, optimum c<strong>on</strong>diti<strong>on</strong>s are<br />

determined

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