Issue when calling XGBOOSTRegressor

[woaipaopao]

Hi @kaz-Anova,

Encounter the following issue when calling XGBRegressor during prediction stage for Zillow Competition and default parameters were used according to the tutorial, appreciate it if you could look into the issue and help out on this.

C:\Users\meipaopao\StackNet\models\n6ut4jf5f4n3e5hjdl51n1p0ji0.pred (The system cannot find the file specified)
Exception in thread "Thread-46536" java.lang.NegativeArraySizeException
at io.input.Retrievecolumn(input.java:1455)
at ml.xgboost.XgboostRegressor.predict2d(XgboostRegressor.java:638)
at ml.Bagging.scoringhelperbagv2.score(scoringhelperbagv2.java:158)
at ml.Bagging.scoringhelperbagv2.run(scoringhelperbagv2.java:185)
at java.lang.Thread.run(Unknown Source)
C:\Users\meipaopao\StackNet\models\doh9b4mmpej0cem7eik7q170h20.pred (The system cannot find the file specified)
Exception in thread "Thread-46537" java.lang.NegativeArraySizeException
at io.input.Retrievecolumn(input.java:1455)
at ml.xgboost.XgboostRegressor.predict2d(XgboostRegressor.java:638)
at ml.Bagging.scoringhelperbagv2.score(scoringhelperbagv2.java:158)
at ml.Bagging.scoringhelperbagv2.run(scoringhelperbagv2.java:185)
at java.lang.Thread.run(Unknown Source)

Thank you very much!
Andy

[kaz-Anova]

1. Can you try putting verbose:true for the xgboostregression to see if there is any other error?

2. Have a look here, maybe that fix for lightgbm, solves your broblems too if you apply it in XGBoost .