trait FObjTrait extends Serializable

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  1. abstract def getGradient(predictions: Array[Array[Double]], trainingData: LightGBMDataset): (Array[Float], Array[Float])

    User defined objective function, returns gradient and second order gradient

    User defined objective function, returns gradient and second order gradient

    predictions

    untransformed margin predicts

    trainingData

    training data

    returns

    List with two float array, correspond to grad and hess