com.collective.modelmatrix.transform

Transformer

object Transformer

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  1. case class FeatureExtractionError(feature: ModelFeature, error: Throwable) extends Product with Serializable

  2. trait Features extends AnyRef

    Marker for DataFrame with feature columns only

  3. type FeaturesDataFrame = AnyRef { ... /* 2 definitions in type refinement */ }

  4. trait LabeledFeatures[L] extends AnyRef

    Marker for DataFrame with labeling columns

  5. type LabeledFeaturesDataFrame[L] = AnyRef { ... /* 2 definitions in type refinement */ }

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  10. def extractFeatures[L](df: DataFrame, features: Seq[ModelFeature], labeling: Labeling[L]): \/[Seq[FeatureExtractionError], LabeledFeaturesDataFrame[L]]

    Extract model features.

    Extract model features. Validates feature extract expression correctness.

    df

    input data frame

    features

    model features

    labeling

    labeling used to select additional columns

    returns

    Extracted features with additional labeling columns

  11. def extractFeatures(df: DataFrame, features: Seq[ModelFeature]): \/[Seq[FeatureExtractionError], FeaturesDataFrame]

    Extract model features.

    Extract model features. Validates feature extract expression correctness.

    df

    input data frame

    features

    model features

    returns

    Extracted features

  12. def finalize(): Unit

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