OOD optimality in efficient design

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OOD optimality in efficient design

Postby wxy008 » Sat May 15, 2021 7:50 am

Dear Michiel,

Sometime when I run efficient design, I get 0% of D optimality. Do you think the D optimality is important in efficient design? Does 0% of D optimality mean bad design?

Thanks,

Wei
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Re: OOD optimality in efficient design

Postby Michiel Bliemer » Sat May 15, 2021 11:00 am

If you are not generating an optimal orthogonal design (OOD) using ;orth = ood then you can ignore the D-optimality percentage since this is a specific measure for OOD. If it is 0% it simply means that it does not satisfy the requirements for optimal orthogonal designs, for example the design is not sequential orthogonal and the design does not have minimum overlap. I never look at D-optimality.
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Re: OOD optimality in efficient design

Postby wxy008 » Sun May 16, 2021 12:34 am

Thanks so much for your quick response and your comments.
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