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albiruni81
albiruni81
Level II

Classical Screening design vs Definitive Screening Design

Mar 26, 2018 10:40 PM (7842 views)

Hi All,

 

Anyone can give me a summary of difference between a classical screening design and DSD? What are the advantages and disadvantages between this two methods

 

Rgrds

 

Irfan

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11 REPLIES 11
albiruni81
albiruni81
Level II

Re: Classical Screening design vs Definitive Screening Design

Mar 30, 2018 05:09 AM (976 views)  |  Posted in reply to message from txnelson 03-30-2018

DSDvsFractionalDOE.PNG

 

Hi Jim,

 

When i do this power analysis, any reason that the model comparison is showing that the fractional factorial is superior than the DSD

 

Rgrds

 

Irfan

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Mark_Bailey
Staff Mark_Bailey
Staff

Re: Classical Screening design vs Definitive Screening Design

Mar 30, 2018 07:44 AM (968 views)  |  Posted in reply to message from albiruni81 03-30-2018

You lose power and estimation efficiency due to the center levels for each factor.They have no leverage in estimating the parameters for the main effects. You gain the ability in a true screening situation to (possibly) avoid additional runs (augmentation) in order to model higher order terms.

Search the JMP Community Blogs for "definitive screening designs" for more details and background information. (Easier for you than 'back and forth' with a lot of questions.)

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