Dear everybody,

I have 20 levels of a factor.
I want to create 1000 combinations of 6 different levels of that factor so
that each level is repeated about the same number of times (across 100
combinations) and so that the number of times level X is combined with
level Y is also about the same (across 1000 combinations).
So, it's an experimental design question.
I don't think I can use algDesign for that.

Any other hints?

Thank you very much!


-- 
Dimitri Liakhovitski

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