Programming the statistical procedures from SAS

Credit scorecard: add new data to an existing model

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Credit scorecard: add new data to an existing model

I have an existing credit scorecard, and wish to add a new data source to the model. However, I am told that we must keep the existing model exactly as it is and simply add the new attribute.

 

I have:

target (good/bad flag)

existing score (or PD)

new binned data recoded into WoE 

 

How could I do this in base SAS? Is it possible - and logically correct - in proc logistic to somehow restrict the coefficient for the existing score to be 0?

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