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com.spotify.featran.transformers

IQROutlierRejector

object IQROutlierRejector extends SettingsBuilder with Serializable

Reject values if they fall outside of either factor * IQR below the first quartile or factor * IQR above the third quartile.

IQR or inter quartile range is the range between the first and the third quartiles.

The bin ranges are chosen using the Algebird's QTree approximate data structure. The precision of the approximation can be controlled with the k parameter.

All values are transformed to zeros.

Values factor * IQR below the first quartile or factor * IQR above the third quartile are rejected as FeatureRejection.Outlier.

When using aggregated feature summary from a previous session, values outside of previously seen [min, max] will also report FeatureRejection.Outlier as rejection.

Source
IQROutlierRejector.scala
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Serializable, Serializable, SettingsBuilder, AnyRef, Any
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  1. final def !=(arg0: Any): Boolean
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  2. final def ##(): Int
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  3. final def ==(arg0: Any): Boolean
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  4. def apply(name: String, rejectLower: Boolean = true, rejectUpper: Boolean = true, k: Int = QTreeAggregator.DefaultK, factor: Double = DefaultFactor): Transformer[Double, B, C]

    Create a new IQROutlierRejector instance.

    Create a new IQROutlierRejector instance.

    rejectLower

    whether to reject outliers factor * IQR below the first quartile

    rejectUpper

    whether to reject outliers factor * IQR above the third quartile

    k

    precision of the underlying Algebird QTree approximation

  5. final def asInstanceOf[T0]: T0
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  10. def fromSettings(setting: Settings): Transformer[Double, B, C]

    Create a new IQROutlierRejector from a settings object

    Create a new IQROutlierRejector from a settings object

    setting

    Settings object

    Definition Classes
    IQROutlierRejector → SettingsBuilder
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