Packages

class VarianceCalculator extends ImpurityCalculator[Double]

Calculat the weighted variance, which is \sum w_i * (x_i - \bar{x})^2, where \bar{x} is the weighted mean of x

Linear Supertypes
ImpurityCalculator[Double], AnyRef, Any
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Inherited
  1. VarianceCalculator
  2. ImpurityCalculator
  3. AnyRef
  4. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new VarianceCalculator(totalSum: Double, totalSquareSum: Double, totalWeight: Double)

    totalSum

    weighted sum of the labels

    totalSquareSum

    weighted sum of the squares of the labels

    totalWeight

    sum of the weights

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 add(value: Double, weight: Double): Double

    Add a value to the left partition

    Add a value to the left partition

    value

    to add

    weight

    of the value

    returns

    the impurity after adding

    Definition Classes
    VarianceCalculator → ImpurityCalculator
  5. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  6. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )
  7. def copy(): VarianceCalculator
  8. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  9. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  10. def finalize(): Unit
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  11. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  12. def getImpurity: Double

    Get the impurity at the current state of the calculator

    Get the impurity at the current state of the calculator

    returns

    impurity

    Definition Classes
    VarianceCalculator → ImpurityCalculator
  13. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  14. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  15. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  16. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  17. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  18. def remove(value: Double, weight: Double): Double

    Remove a value from the left partition

    Remove a value from the left partition

    value

    to remove

    weight

    of the value

    returns

    the impurity after removing

    Definition Classes
    VarianceCalculator → ImpurityCalculator
  19. def reset(): Unit

    Reset the calculator such that every item is on the right

    Reset the calculator such that every item is on the right

    Definition Classes
    VarianceCalculator → ImpurityCalculator
  20. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  21. def toString(): String
    Definition Classes
    AnyRef → Any
  22. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  23. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  24. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )

Inherited from ImpurityCalculator[Double]

Inherited from AnyRef

Inherited from Any

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