topic Re: cross validation - sas miner in SAS Data Science

cross validation - sas miner

dee2017 — Wed, 30 Aug 2017 13:51:25 GMT

Hello,

I would like to do cross validation in sas miner. I have a file import node, then a data partition node, transform variables node,start group node, decision tree and end group node in the order listed. However when i ran the start group node it comes up with an error;

"Missing a start groups or an End Groups node".

Would anyone know how to rectify this issue please? I already have both the nodes it says are missing.

And i put this formula in the transform variables formulas;

int((f*(ranuni(0)))+1)

I also set the start groups mode to Cross validation. So not sure where i am going wrong.

Thanks in advance
Dee

Re: cross validation - sas miner

WendyCzika — Wed, 30 Aug 2017 15:09:36 GMT

Try running from the End Groups node; I don't think you can run the Start Groups node without also running the End Groups node in the flow.

Re: cross validation - sas miner

dee2017 — Wed, 30 Aug 2017 20:57:53 GMT

Thanks. That did work but now the decision tree has the same error. It says;

"Missing a start node or end node"

The decision tree is between the start group and end group.

Any advise on this please?

Thanks

Dee

Re: cross validation - sas miner

WendyCzika — Thu, 31 Aug 2017 13:15:07 GMT

Do you mean if you run from the Decision Tree node? Anytime you have Start/End Groups nodes in your flow, you need to run from the End Groups node or a subsequent node since the Start and End Groups nodes have to be paired together.

Re: cross validation - sas miner

dee2017 — Thu, 31 Aug 2017 20:33:38 GMT

Your suggestion worked!

Thank you so much.

Much appreciated.

Dee