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ArrayIndexOutOfBounds when using GradientBoostingForestClassifier

See original GitHub issue

Hi. Thanks for stacknet classifier. I encountered a exception when I try to add some more features to the kaggle quora problem.

Exception in thread "Thread-23" java.lang.ArrayIndexOutOfBoundsException: 12
        at ml.Tree.DecisionTreeRegressor.expand_node(DecisionTreeRegressor.java:3011)
        at ml.Tree.DecisionTreeRegressor.expand_node(DecisionTreeRegressor.java:3038)
        at ml.Tree.DecisionTreeRegressor.expand_node(DecisionTreeRegressor.java:3042)
        at ml.Tree.DecisionTreeRegressor.expand_node(DecisionTreeRegressor.java:3042)
        at ml.Tree.DecisionTreeRegressor.expand_node(DecisionTreeRegressor.java:3038)
        at ml.Tree.DecisionTreeRegressor.expand_node(DecisionTreeRegressor.java:3042)
        at ml.Tree.DecisionTreeRegressor.expand_node(DecisionTreeRegressor.java:3038)
        at ml.Tree.DecisionTreeRegressor.expand_node(DecisionTreeRegressor.java:3038)
        at ml.Tree.DecisionTreeRegressor.expand_node(DecisionTreeRegressor.java:3038)
        at ml.Tree.DecisionTreeRegressor.expand_node(DecisionTreeRegressor.java:3042)
        at ml.Tree.DecisionTreeRegressor.expand_node(DecisionTreeRegressor.java:3038)
        at ml.Tree.DecisionTreeRegressor.fit(DecisionTreeRegressor.java:2382)
        at ml.Tree.DecisionTreeRegressor.run(DecisionTreeRegressor.java:483)
        at java.lang.Thread.run(Thread.java:745)
Exception in thread "Thread-5" java.lang.NullPointerException
        at ml.Tree.DecisionTreeRegressor.isfitted(DecisionTreeRegressor.java:3275)
        at ml.Tree.scoringhelperv2.<init>(scoringhelperv2.java:107)
        at ml.Tree.RandomForestRegressor.predict2d(RandomForestRegressor.java:744)
        at ml.Tree.GradientBoostingForestClassifier.fit(GradientBoostingForestClassifier.java:2353)
        at ml.Tree.GradientBoostingForestClassifier.run(GradientBoostingForestClassifier.java:382)
        at java.lang.Thread.run(Thread.java:745)


Exception in thread "main" java.lang.NullPointerException
        at ml.Tree.scoringhelperfv2.<init>(scoringhelperfv2.java:107)
        at ml.Tree.GradientBoostingForestClassifier.predict_proba(GradientBoostingForestClassifier.java:603)
        at ml.stacknet.StackNetClassifier.fit(StackNetClassifier.java:2438)
        at stacknetrun.runstacknet.main(runstacknet.java:385)
Exception in thread "Thread-28783" java.lang.NullPointerException
        at ml.Tree.DecisionTreeRegressor.isfitted(DecisionTreeRegressor.java:3275)
        at ml.Tree.scoringhelperv2.<init>(scoringhelperv2.java:107)
        at ml.Tree.RandomForestRegressor.predictfs(RandomForestRegressor.java:590)
        at ml.Tree.scoringhelperfv2.score(scoringhelperfv2.java:149)
        at ml.Tree.scoringhelperfv2.run(scoringhelperfv2.java:175)
        at java.lang.Thread.run(Thread.java:745)

I used the paramsv1.txt but add more threads to each base classifier.

Issue Analytics

State:
Created 6 years ago
Comments:13 (5 by maintainers)

Top GitHub Comments

1reaction

yqf3139commented, May 21, 2017

Thanks for the help.

1reaction

kaz-Anovacommented, May 21, 2017

Apologies for late response. I am still working on these things. The error in your case was triggered because you have some elements with ‘zero’ values. like col_index:0.00000 . StackNet are not expecting zero values in the sparse format . However with the newer version I will release, this will be taken care of. Apologies for coming back late again. I did not forget you- it is just I am buried with tasks these days.

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