o

com.spotify.featran.transformers

PolynomialExpansion

object PolynomialExpansion extends SettingsBuilder with Serializable

Transform vector features by expanding them into a polynomial space, which is formulated by an n-degree combination of original dimensions.

Missing values are transformed to zero vectors.

When using aggregated feature summary from a previous session, vectors of different dimensions are transformed to zero vectors and FeatureRejection.WrongDimension rejections are reported.

Source
PolynomialExpansion.scala
Linear Supertypes
Serializable, Serializable, SettingsBuilder, AnyRef, Any
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  1. PolynomialExpansion
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Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. def apply(name: String, degree: Int = 2, expectedLength: Int = 0): Transformer[Array[Double], Int, Int]

    Create a new PolynomialExpansion instance.

    Create a new PolynomialExpansion instance.

    degree

    the polynomial degree to expand, which should be greater than or equal to 1

    expectedLength

    expected length of the input vectors, or 0 to infer from data

  5. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  6. def clone(): AnyRef
    Attributes
    protected[lang]
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    @throws( ... ) @native()
  7. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  8. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  9. def expand(v: Array[Double], degree: Int): Array[Double]
  10. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  11. def fromSettings(setting: Settings): Transformer[Array[Double], Int, Int]

    Create a new PolynomialExpansion from a settings object

    Create a new PolynomialExpansion from a settings object

    setting

    Settings object

    Definition Classes
    PolynomialExpansion → SettingsBuilder
  12. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  13. def hashCode(): Int
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    @native()
  14. final def isInstanceOf[T0]: Boolean
    Definition Classes
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  15. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  16. final def notify(): Unit
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    @native()
  17. final def notifyAll(): Unit
    Definition Classes
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    @native()
  18. final def synchronized[T0](arg0: ⇒ T0): T0
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  19. def toString(): String
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  20. final def wait(): Unit
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    @throws( ... )
  21. final def wait(arg0: Long, arg1: Int): Unit
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    @throws( ... )
  22. final def wait(arg0: Long): Unit
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Inherited from Serializable

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Inherited from SettingsBuilder

Inherited from AnyRef

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