[R] AlgDesign - $D $A $Ge $Dea

[Dennis Murphy]

See
?AlgDesign::optFederov

and look for the 'Value' section, where these elements of the output
list are defined.

Dennis

On Wed, Nov 23, 2011 at 7:15 PM, 蓁蓁 李 <tszhenzhenj at hotmail.com> wrote:
>
> Hi,
>
> I am wondering how I should interpreate the output of optFederov() in AlgDesign.
>
> Specially I want to know what is $D, $A, $Ge and $Dea, which one I can use as an efficiency to say how good the optimal design is.
>
> I only know when a orthogonal design comes, $D = 1.
>
> I red the pdf document    --   vignette("AlgDesign")
>
> [Just type: vignette("AlgDesign") in R, you will get this pdf document]
>
> On page 20 section 4.2.1.3, it says: the D and G efficiencies of the following ... are 98% and 89%.
>
> I tried the code as shown on page 20 a few times and output showed different designs but the figure of $D, $A, $Ge and $Dea are similar. I don't see $D is close to 0.98, but $Ge is 0.89. One of the output as below:
>
>
>
>
>> dat = gen.factorial(3, 3, center = T, varNames = c("A", "B", "C"))
>> desC = optFederov(~quad(A,B,C), dat, nT = 14, evaluateI = T, nR = 100)
>> desC
> $D
> [1] 0.4630447
>
> $A
> [1] 3.22
>
> $I
> [1] 9.945833
>
> $Ge
> [1] 0.893
>
> $Dea
> [1] 0.887
>
> $design
>    A  B  C
> 1  -1 -1 -1
> 3   1 -1 -1
> 5   0  0 -1
> 7  -1  1 -1
> 9   1  1 -1
> 11  0 -1  0
> 13 -1  0  0
> 15  1  0  0
> 17  0  1  0
> 19 -1 -1  1
> 21  1 -1  1
> 23  0  0  1
> 25 -1  1  1
> 27  1  1  1
>
> $rows
>  [1]  1  3  5  7  9 11 13 15 17 19 21 23 25 27
>
> Thanks very much!
> J
>
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>
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