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yanlu
Fluorite | Level 6

Hi everyone , 

 

I was wondering if the creation of dummy variable for the node regression was an automatical process.

I know it create k-1 modalities interval modalities for a nominal variable which has k modalities 

 

It's an automatic process ?

 

Thank for this confirmation

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WendyCzika
SAS Employee

Yes, the procedures used for regression in EM all internally/automatically create dummy variables for class inputs.  

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WendyCzika
SAS Employee

Yes, the procedures used for regression in EM all internally/automatically create dummy variables for class inputs.  

rnibbe0
Calcite | Level 5

Thank you Wendy for this clarification.

 

Is there a reference point in a SAS manual so I can see how it is doing this 'internally/automatically' to ensure it is doing what I expect?

 

Thank you!! Rod.

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