01-07-2015 10:14 AM
I was trying to ensemble HP Forest model with Elastic Net logistic model and gradient boosting model in EM. Unfortunately, it always gives me error said "link cannot be added as the nodes are not compatible with each other". Any solution for this?
01-07-2015 02:03 PM
When did you get this error?
When you run the model?
When you connect two specific nodes? If this the case which nodes are they?
2) Can you connect the HP Forest Node alone with the Ensemble Node and run the model without error?
01-07-2015 02:25 PM
So it is not related to other not HP nodes.
It is just HP Forest Node an Ensemble Node, not working together. because if you tried other HP nodes instead of the HP Forest it will work fine.
With version 13.2, i can connect the two nodes, but then i get run time error not the same error but it does not work too.
01-07-2015 03:00 PM
Mohamed you are right there are two issues depending on the EM version.
ggao, it seems like you can mix and match HP/non-HP starting EM13.1 as per your invalid link error.
The rest of us with EM13.1 or newer will get a generic "Run time error" when trying to ensemble a node that does not produce score code (like HP Forest).
01-07-2015 03:47 PM
It is just the HP Forest option that is in EM.
Starting from EM 13.1 you can use new node called "Open Source Integration" which enables the integration with the R language inside a SAS Enterprise Miner flow. Then you can run the randomForest package in R and get the result in the EM.
01-07-2015 03:18 PM
Also i found that _in case of ensemble a node that does not produce score code _ it may run without error. But we do not get result from the ensemble node result. For example in case of ensemble MBR Node with other nodes.
01-07-2015 02:19 PM
What version of EM are you using? In the first versions of EM with HPDM you could not mix and match HP/non-HP nodes. In more recent versions you can.
Also, you cannot do ensembles of nodes that do not produce score code. For example, the HPForest node can only score through an additional step (https://communities.sas.com/docs/DOC-7832). So technically you could work this around, although I haven't done it.
The Ensemble node combines the score codes of several modeling nodes, but HPForest is not supported. It definitely is on our list to address this.
I hope it helps,