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Phil_Kay
Staff

Definitive Augmentation of Definitive Screening Designs

Definitive screening designs (DSDs) uniquely address the key needs of many experimenters. How else can we explain the rapid and enthusiastic adoption of DSDs since their discovery was published in 2011? For many experimenters, 13- or 17-run DSDs for five to seven factors are go-to designs when screening for the few driving factors. Along with ‘Fit Definitive Screening’ in JMP, you potentially have a simple, efficient and effective experimental workflow to find the important main effects, interactions and curvilinear behaviors of these factors. If only three of the factors are active, you can fit the full second-order RSM model and achieve screening and optimization in one step. But what if more than three factors are active? When ambiguity occurs is there a simple next step? Or does the complexity of this situation become a barrier to adoption of DSDs? In this presentation, you will first hear about real-life examples that demonstrate the value of DSDs. You will then see simple ways to augment these DSDs, ensuring that the structure and properties can be preserved to maintain the benefits of DSDs. Consequently, more people in more situations can benefit from the workflow of sequential DOE and DSDs.

 

The attached pdf discusses the challenge and the search for a solution.

 

Practical implementation of these solutions is discussed in Strategies to Combat Problems Employing DSDs by Dr. Paul Nelson. The article is Part 3 in a series of articles exploring Practical (Real-life) Implementation of Sequential Design of Experiments and the Introduction of Definitive Screening Designs.

 

Comments
cbaril

Thank you for the great talk! Are the add-ins still available for download?

 

Phil_Kay

Hi,

Andrew and Paul from Prism Training and Consultancy Ltd did the addin development so you should contact them. You can find them in the JMP Partner program: JMP Partners | JMP.

You should note that this work was a research project that only focused on a narrow scope. It has not been generalised to the broader range of potential DSD augmentation situations. You might find that it does not apply to your specific DSD augmentation needs.

The more general augmentation solution is to use Augment Design from the JMP DOE menu.

You might want to talk with your local JMP contact to discuss what you are trying to do with DSD augmentation so that they can provide some guidance.