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Issue Classification Scenario Fails After Multiple Refinements #661

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@nate-george-buck

Description

@nate-george-buck

System Information (please complete the following information):

  • Model Builder Version: 16.0.2003.302
  • Visual Studio 2019 Enterprise

Describe the bug
Using the Issue Classification Scenario:
After a failed attempt to Train, I revisited the Data screen and changed some of the columns. I then attempted another Train that failed again. I changed more of the columns settings and attempted a third time to Train. This time an error was thrown as in the below image.

To Reproduce
Steps to reproduce the behaviour:

  1. Go to 'Scenario' and select 'Issue Classification'
  2. Select a file with multiple text columns using ';' as the delimiter.
  3. Select a 'Label' and as many 'Feature' columns as reasonable.
  4. Click 'Train'
  5. Input 180 as the 'Time to train'
  6. Click 'Start training'
  7. If no exception is thrown, edit 'Feature' columns and repeat steps 4-6.
  8. Exception is thrown.

Expected behaviour
I expected to be able to repeat steps 3-6 as many times as necessary to complete a successful training session.

Screenshots
image

Additional context
As I'm using version control, I reverted my version and tried again. I also tried restarting VS. Now every time I attempt to train, the exception is thrown. I would attach the data source file, but it contains sensitive database schema information.

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