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kerenafK1
Calcite | Level 5 kerenafK1
Calcite | Level 5

Adjusting prior probabilities and ROC curve in SAS Eminer

Posted 05-16-2016 08:09 PM (1339 views)

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

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WendyCzika
SAS Employee WendyCzika
SAS Employee

Re: Adjusting prior probabilities and ROC curve in SAS Eminer

Posted 05-20-2016 10:27 AM (1312 views)  |   In reply to kerenafK1

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

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kerenafK1
Calcite | Level 5 kerenafK1
Calcite | Level 5

Re: Adjusting prior probabilities and ROC curve in SAS Eminer

Posted 05-23-2016 05:08 PM (1303 views)  |   In reply to kerenafK1

Hi!

 

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


SAS Question.png
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  • ‎05-16-2016 08:09 PM
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