o

com.spotify.featran.transformers

VonMisesEvaluator

object VonMisesEvaluator extends SettingsBuilder with Serializable

Transform a column of continuous features that represent the mean of a von Mises distribution to n columns of continuous features. The number n represent the number of points to evaluate the von Mises distribution. The von Mises pdf is given by

f(x | mu, kappa, scale) = exp(kappa * cos(scale*(x-mu)) / (2*pi*Io(kappa))

and is only valid for x, mu in the interval [0, 2*pi/scale].

Source
VonMisesEvaluator.scala
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Serializable, Serializable, SettingsBuilder, AnyRef, Any
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  1. final def !=(arg0: Any): Boolean
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    AnyRef → Any
  2. final def ##(): Int
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  3. final def ==(arg0: Any): Boolean
    Definition Classes
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  4. def apply(name: String, kappa: Double, scale: Double, points: Array[Double]): Transformer[Double, Unit, Unit]

    Create a new VonMisesEvaluator instance.

    Create a new VonMisesEvaluator instance.

    kappa

    measure of concentration

    scale

    scaling factor

    points

    points to evaluate the distribution with

  5. final def asInstanceOf[T0]: T0
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    Any
  6. def clone(): AnyRef
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    protected[lang]
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    @throws( ... ) @native()
  7. final def eq(arg0: AnyRef): Boolean
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  8. def equals(arg0: Any): Boolean
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  9. def finalize(): Unit
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    protected[lang]
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    @throws( classOf[java.lang.Throwable] )
  10. def fromSettings(setting: Settings): Transformer[Double, Unit, Unit]

    Create a new VonMisesEvaluator from a settings object

    Create a new VonMisesEvaluator from a settings object

    setting

    Settings object

    Definition Classes
    VonMisesEvaluator → SettingsBuilder
  11. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  12. def getProbability(x: Double, mu: Double, kappa: Double, scale: Double): Double
  13. def hashCode(): Int
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    @native()
  14. final def isInstanceOf[T0]: Boolean
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  15. final def ne(arg0: AnyRef): Boolean
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  16. final def notify(): Unit
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    @native()
  17. final def notifyAll(): Unit
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  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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  21. final def wait(arg0: Long, arg1: Int): Unit
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  22. final def wait(arg0: Long): Unit
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