Updating pmml file in Analysis Model/ PMML changes don’t take effect in prediction

Question

Hello,
 
Thingworx provides a way to edit already existing analysis models and their pmml files.
We only want to update/replace the old .pmml file with a new one (updated weights).
However by doing that, the prediction does not change with the new pmml file. We also tried restarting thingworx and thingworx analysis.
We strive to create a generic solution for updating an existing analysis model with a newer version of the pmml model. The input parameters of the used pmml model always stay the same.
 
For the prediction we are using the following analysis provider: TW.AnalysisServices.AnalyticsServer.AnalyticsServerConnector
 
What we also tried so far:
When creating a new analysis model, thingworx seems to store the uploaded *.pmml models in the following location:
/ThingworxStorage/repository/TW.AnalysisServices.ModelRepository/Provider/{ModelName}.pmml
 
However replacing the model in this folder with a newer version (same inputs; only with updated model weights/parameters) does not lead to a change in the prediction. Restarting the platform didn’t work either. Even after deleting the pmml file in the folder the prediction still worked.
 
Does Thingworx cache and/or store the uploaded models to another location/database?
 
How can we update and replace an already in-use pmml model without changing any configuration in thingworx?

nsampat · Accepted Answer

@Max3 ,

Thank you for posting to the PTC Community.

I see that you have already opened a case with Technical Support requesting the same information.

In short, if you want to update an existing model, a new model needs to be re-created/uploaded in Analytics Manager and Analysis Event re-created.

We will also reach out to you in the case that you have opened.

Regards,

Neel

Sign up

Please use your PTC eSupport account.

Welcome to the PTC Community

Please use your PTC eSupport account.