Package ml.dmlc.xgboost4j.java
Interface IObjective
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Serializable
public interface IObjective extends Serializable
interface for customize Object function- Author:
- hzx
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description List<float[]>
getGradient(float[][] predicts, DMatrix dtrain)
user define objective function, return gradient and second order gradient
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Method Detail
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getGradient
List<float[]> getGradient(float[][] predicts, DMatrix dtrain)
user define objective function, return gradient and second order gradient- Parameters:
predicts
- untransformed margin predictsdtrain
- training data- Returns:
- List with two float array, correspond to first order grad and second order grad
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