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System.InvalidOperationException: 'LightGBM Error, code is -1 #5431
Description
- Tested on Windows 10 and Server 2019:
- .NET 4.7:
- Microsoft.ML (1.5.2)
- LightGbm (3.0.0)
Issue
It crashes in this line
-
var model = pipeline.Fit(trainData);
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I get this error: System.InvalidOperationException: 'LightGBM Error, code is -1, error message is 'Unknown importance type: only support split=0 and gain=1'.'
This error can be reproduced by an example. I just used the example in docs.microsoft.com and able to reproduce it.
I created a console app and you can access it from the link below:
I talked to the LightGBM team and they mentioned this issue exists in .Net code and not theirs.
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gharibkhani commentedon Oct 16, 2020
@Lynx1820 would you please look at this and let me know if there is any plan to fix this issue.
mstfbl commentedon Oct 20, 2020
Hi @gharibkhani ,
Thank you for opening this Issue. I replicated the LightGBM code sample you linked in a fresh new .NET Console App project, and successfully ran the example given. I did not see any failures on the
var model = pipeline.Fit(trainData);you said. I installed theMicrosoft.ML (1.5.2)andMicrosoft.ML.LightGbm (1.5.2)NuGet packages. I believe you may not have the latestMicrosoft.MLand/orMicrosoft.ML.LightGbmNuGet packages installed, please confirm you have v1.5.2 for both.I have zipped the working repro I mention above here. Please unzip the repro I've attach and let me know whether or not it works.
Issue5431.zip
Feel free to reopen this issue if the repro I've linked is not working. Thanks.
gharibkhani commentedon Oct 20, 2020
Hi @mstfbl
I updated the comment. I am using Microsoft.ML (1.5.2) and LightGbm (3.0.0). My sample has installed these versions as well.
I do not have permission to reopen this issue. Please open it again.