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Adjusting prior probabilities and ROC curve in SAS Eminer

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New Contributor
Posts: 2

Adjusting prior probabilities and ROC curve in SAS Eminer

To whom may it concern,

 

I adjusted prior probabilities accordingly since my modeling data is non-event undersampled, using SAS Eminer 14.1

 

I noticed that ROC curve is flattened after that. I thought that AROC should not changed by over/undersampling, so I am very confused.

 

Can you kindly help me to understand?

 

Many thanks in advance,

Kere

SAS Super FREQ
Posts: 306

Re: Adjusting prior probabilities and ROC curve in SAS Eminer

Posted in reply to kerenafK1

Can you provide some more details about your flow, specifically the model nodes you are using?

New Contributor
Posts: 2

Re: Adjusting prior probabilities and ROC curve in SAS Eminer

Posted in reply to kerenafK1

Hi!

 

Thank you for your kind reply. Please find the attachment containing the diagram overlook.


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