Select Optimal Design - Methods
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Select Optimal Design - Methods
Stat > DOE > Factorial, Response Surface, or Mixture > Select Optimal Design > choose Augment/Improve design > Methods
Allows you to choose the search procedure for improving the initial design.
Search Procedure for Improving Initial Design
Exchange method with number of exchange points: Choose to improve the initial design using the exchange method. Minitab will first add the best points from the candidate set, and then drop the worst points until the D-optimality of the design cannot be improved further. Then, enter the number of points to be exchanged.
Fedorov's method: Choose to improve the initial design using Fedorov's method. Minitab will simultaneously switch pairs of points. This is accomplished by adding one point from the candidate set and dropping another point so that the switch results in maximum improvement in D-optimality. This process continues until the design cannot be improved further.
None: Choose to suppress improvement of the initial design.