topic Re: Adjusting prior probabilities and ROC curve in SAS Eminer in SAS Data Science https://communities.sas.com/t5/SAS-Data-Science/Adjusting-prior-probabilities-and-ROC-curve-in-SAS-Eminer/m-p/272571#M4038 <P>Hi!</P><P>&nbsp;</P><P>Thank you for your kind reply. Please find the attachment containing the diagram overlook.</P><BR /><IMG src="https://communities.sas.com/t5/image/serverpage/image-id/12571i17455302D3E55414/image-size/large?v=1.0&amp;px=600" border="0" alt="SAS Question.png" title="SAS Question.png" /> Mon, 23 May 2016 21:08:40 GMT kerenafK1 2016-05-23T21:08:40Z Adjusting prior probabilities and ROC curve in SAS Eminer https://communities.sas.com/t5/SAS-Data-Science/Adjusting-prior-probabilities-and-ROC-curve-in-SAS-Eminer/m-p/270828#M4009 <P>To whom may it concern,</P><P>&nbsp;</P><P>I adjusted prior probabilities accordingly since my modeling data is non-event undersampled, using SAS Eminer 14.1</P><P>&nbsp;</P><P>I noticed that ROC curve is flattened after that. I thought that AROC should not changed by over/undersampling, so I am very confused.</P><P>&nbsp;</P><P>Can you kindly help me to understand?</P><P>&nbsp;</P><P>Many thanks in advance,</P><P>Kere</P> Tue, 17 May 2016 00:09:19 GMT https://communities.sas.com/t5/SAS-Data-Science/Adjusting-prior-probabilities-and-ROC-curve-in-SAS-Eminer/m-p/270828#M4009 kerenafK1 2016-05-17T00:09:19Z Re: Adjusting prior probabilities and ROC curve in SAS Eminer https://communities.sas.com/t5/SAS-Data-Science/Adjusting-prior-probabilities-and-ROC-curve-in-SAS-Eminer/m-p/271993#M4028 <P>Can you provide some more details about your flow, specifically the model nodes you are using?</P> Fri, 20 May 2016 14:27:08 GMT https://communities.sas.com/t5/SAS-Data-Science/Adjusting-prior-probabilities-and-ROC-curve-in-SAS-Eminer/m-p/271993#M4028 WendyCzika 2016-05-20T14:27:08Z Re: Adjusting prior probabilities and ROC curve in SAS Eminer https://communities.sas.com/t5/SAS-Data-Science/Adjusting-prior-probabilities-and-ROC-curve-in-SAS-Eminer/m-p/272571#M4038 <P>Hi!</P><P>&nbsp;</P><P>Thank you for your kind reply. Please find the attachment containing the diagram overlook.</P><BR /><IMG src="https://communities.sas.com/t5/image/serverpage/image-id/12571i17455302D3E55414/image-size/large?v=1.0&amp;px=600" border="0" alt="SAS Question.png" title="SAS Question.png" /> Mon, 23 May 2016 21:08:40 GMT https://communities.sas.com/t5/SAS-Data-Science/Adjusting-prior-probabilities-and-ROC-curve-in-SAS-Eminer/m-p/272571#M4038 kerenafK1 2016-05-23T21:08:40Z