Hi all,

We're trying to develop a Topic Model with machine learning in Pega Personal Edition. We use Pega Personal Edition v8.3 and v8.4. In both versions we get an error when we want to train a new topic model.

We perform the following steps:

1. Go to prediction studio
2. Create new categorization model
3. Create topic model using machine learning
4. Apply to: @Baseclass
5. Create a taxanomy
6. Upload a data source to train the model
7. In tab 'Sample construction' I select 'User defined sampling based on ‘Type’ column'
8. In tab 'Model creation' I select 'Maximum Entropy' and click next

It starts processing but then this error is displayed:

When I review Pega log, I see this error (see attachment ErrorLog.txt for complete log):

It's throwing a FileNotFoundException (system cannot find the path specified).

To be sure that our training data is correct, we tried to develop a Topic Model with our training data on the cloud environment of the Pega Academy. On this environment everything is working as expected. However it doesn't work when we try the same on Pega Personal Edition. Is there maybe some setting we've to configure?

Is there anyone who has a fix for this error or can help us out? If more details are needed, please let me know.

Thanks a lot! Kind regards,

Martijn