Hi,
Question: Is there a way, to add runs to a DOE (Augment Design), which adds a focused range of a factor. This way you can evaluate a wider range, and also focus on the expected optimal range based on prior knowledge.
Ex. 25 runs with a factor(A) of 0-100 + 5 runs with factor(A) of 0-30
Background:
I have created a definitive screening design which ranges my factors very wide. I have prior knowledge (Both in-house, and through literature) showing that the range that this factor is usually effective within a specific range (Arbitrarily ~20). That said, DOEs can surprise you when prior knowledge is based on OFAT approaches which is why I have opted for a wider range.
My DOE ranges this parameter from 0-100 currently. Looking over the DOE, there are three levels it has generated (0,50,100). My concern is that because the 2 upper levels (50, and 100) are potentially both far above the optimal point, I will not get meaningful data. I am debating adding more runs and forcing the DOE to also additionally evaluate a focused, narrower space around the target 20 mark.