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BenGengenbach
BenGengenbach
Level III

Understanding the "Change Generating Rules" tab of the factorial screening platform

Created: Mar 16, 2023 08:56 AM  |  Last Modified: Jun 8, 2023 9:28 AM (2649 views)

Hi everybody,

 

I am setting up a factorial screening design and want to adjust the 2FI aliasing so it fits my anticipated interactions.

BenGengenbach_0-1678971303189.png

 

What I would like is to have [Perform dialysis]x[Centrifugation % of max] aliased with [Imidazol]x[Covered surface area]

My problem is I cant get my head around the logic of the "Change Generating Rule" tab during design generation.
I read the help topic but I am still lost. 

How do I interpret that weird table. Everything I do feels random and half of the time I do end up with a block effect aliased with a main effect.

 

cheers ben

 

 

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10 REPLIES 10
statman
Super User statman
Super User

Re: Understanding the "Change Generating Rules" tab of the factorial screening platform

Mar 17, 2023 10:57 AM (353 views)  |  Posted in reply to message from BenGengenbach 03-16-2023

Ha, and I thought it was just me (though I don't consider myself an expert!). Similar to Victor, I have to "play around" with the configuration and keep checking the aliasing to get what I want.

 

Curious, why do you want 4 blocks?  Certainly you are not interested in cubic block effects. What is your purpose of blocking?

"All models are wrong, some are useful" G.E.P. Box
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