org.apache.spark.mllib.tree.model

GradientBoostedTreesModel

object GradientBoostedTreesModel extends Loader[GradientBoostedTreesModel] with Serializable

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@Since( "1.3.0" )
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Serializable, Serializable, Loader[GradientBoostedTreesModel], AnyRef, Any
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  8. def computeInitialPredictionAndError(data: RDD[LabeledPoint], initTreeWeight: Double, initTree: DecisionTreeModel, loss: Loss): RDD[(Double, Double)]

    Compute the initial predictions and errors for a dataset for the first iteration of gradient boosting.

    Compute the initial predictions and errors for a dataset for the first iteration of gradient boosting.

    returns

    a RDD with each element being a zip of the prediction and error corresponding to every sample.

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    @Since( "1.4.0" )
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  15. def load(sc: SparkContext, path: String): GradientBoostedTreesModel

    sc

    Spark context used for loading model files.

    path

    Path specifying the directory to which the model was saved.

    returns

    Model instance

    Definition Classes
    GradientBoostedTreesModelLoader
    Annotations
    @Since( "1.3.0" )
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  21. def updatePredictionError(data: RDD[LabeledPoint], predictionAndError: RDD[(Double, Double)], treeWeight: Double, tree: DecisionTreeModel, loss: Loss): RDD[(Double, Double)]

    Update a zipped predictionError RDD (as obtained with computeInitialPredictionAndError)

    Update a zipped predictionError RDD (as obtained with computeInitialPredictionAndError)

    returns

    a RDD with each element being a zip of the prediction and error corresponding to each sample.

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    @Since( "1.4.0" )
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