case class CategoricalParams(minDataPerGroup: Option[Int], maxCatThreshold: Option[Int], catl2: Option[Double], catSmooth: Option[Double], maxCatToOneHot: Option[Int]) extends ParamGroup with Product with Serializable

Defines parameters related to categorical features for lightgbm.

minDataPerGroup

minimal number of data per categorical group.

maxCatThreshold

limit number of split points considered for categorical features

catl2

L2 regularization in categorical split.

catSmooth

this can reduce the effect of noises in categorical features, especially for categories with few data.

maxCatToOneHot

when number of categories of one feature smaller than or equal to this, one-vs-other split algorithm will be used.

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Product, Equals, ParamGroup, Serializable, Serializable, AnyRef, Any
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Instance Constructors

  1. new CategoricalParams(minDataPerGroup: Option[Int], maxCatThreshold: Option[Int], catl2: Option[Double], catSmooth: Option[Double], maxCatToOneHot: Option[Int])

    minDataPerGroup

    minimal number of data per categorical group.

    maxCatThreshold

    limit number of split points considered for categorical features

    catl2

    L2 regularization in categorical split.

    catSmooth

    this can reduce the effect of noises in categorical features, especially for categories with few data.

    maxCatToOneHot

    when number of categories of one feature smaller than or equal to this, one-vs-other split algorithm will be used.

Value Members

  1. final def !=(arg0: Any): Boolean
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    AnyRef → Any
  2. final def ##(): Int
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    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
    Definition Classes
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  4. def appendParams(sb: ParamsStringBuilder): ParamsStringBuilder
    Definition Classes
    CategoricalParams → ParamGroup
  5. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  6. val catSmooth: Option[Double]
  7. val catl2: Option[Double]
  8. def clone(): AnyRef
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    protected[lang]
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    @throws( ... ) @native()
  9. final def eq(arg0: AnyRef): Boolean
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  10. def finalize(): Unit
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  11. final def getClass(): Class[_]
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  12. final def isInstanceOf[T0]: Boolean
    Definition Classes
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  13. val maxCatThreshold: Option[Int]
  14. val maxCatToOneHot: Option[Int]
  15. val minDataPerGroup: Option[Int]
  16. final def ne(arg0: AnyRef): Boolean
    Definition Classes
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  17. final def notify(): Unit
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  18. final def notifyAll(): Unit
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  19. final def synchronized[T0](arg0: ⇒ T0): T0
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  20. def toString(): String
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  21. final def wait(): Unit
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  22. final def wait(arg0: Long, arg1: Int): Unit
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  23. final def wait(arg0: Long): Unit
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