topic Re: node regression nominal variable automatically transform in interval modalities ? in SAS Data Science

node regression nominal variable automatically transform in interval modalities ?

yanlu — Mon, 22 May 2017 14:47:28 GMT

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

WendyCzika — Tue, 23 May 2017 20:35:20 GMT

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

rnibbe0 — Sat, 10 Mar 2018 16:34:34 GMT

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.