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LightGbm System.InvalidOperationException after the latest update #5382
Description
System information
- Win10/x64
- .Net 4.8
Issue
- It crashes in this line var model = pipeline.Fit(trainData);
- I get this error: System.InvalidOperationException: 'LightGBM Error, code is -1, error message is 'Unknown importance type: only support split=0 and gain=1'.'
With the previous version everything worked fine and nothing was modified in my source code since it worked.
This is my gbm setting
.Append(mlContext.Regression.Trainers.LightGbm("PercentPredict", "Features",null,null,null,null,200));
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[-]LightGbm error after the latest update[/-][+]LightGbm System.InvalidOperationException after the latest update[/+]mstfbl commentedon Sep 2, 2020
Hi @evo11x ,
Thank you for letting us know about this issue. Can you please attach a repro with your full code and dataset with which you obtained this error? We need to see these to fully debug your issue. Thanks.
kere-nel commentedon Sep 8, 2020
Hi @evo11x ,
Please reopen if you're able to provide us with more information.
gharibkhani commentedon Oct 12, 2020
Hi @Lynx1820 ,
This error can be reproduced by any example. I just used the example in docs.microsoft.com and able to reproduce it.
https://docs.microsoft.com/en-us/dotnet/api/microsoft.ml.lightgbmextensions.lightgbm?view=ml-dotnet
I created a console app and you can access it from the link below:
https://drive.google.com/drive/folders/1-wc04CM75-IGoxjRAniDuhqI-zrHTWwM?usp=sharing
I created a new issue #5431