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
Ordering
- Alphabetic
- By Inheritance
Inherited
- VarianceCalculator
- ImpurityCalculator
- AnyRef
- Any
- Hide All
- Show All
Visibility
- Public
- Protected
Instance Constructors
- 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
- final def !=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def ##: Int
- Definition Classes
- AnyRef → Any
- final def ==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- 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
- final def asInstanceOf[T0]: T0
- Definition Classes
- Any
- def clone(): AnyRef
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.CloneNotSupportedException]) @native()
- def copy(): VarianceCalculator
- final def eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- def equals(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef → Any
- def finalize(): Unit
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.Throwable])
- final def getClass(): Class[_ <: AnyRef]
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
- 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
- def hashCode(): Int
- Definition Classes
- AnyRef → Any
- Annotations
- @native()
- final def isInstanceOf[T0]: Boolean
- Definition Classes
- Any
- final def ne(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- final def notify(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
- final def notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @native()
- 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
- 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
- final def synchronized[T0](arg0: => T0): T0
- Definition Classes
- AnyRef
- def toString(): String
- Definition Classes
- AnyRef → Any
- final def wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long, arg1: Int): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
- final def wait(arg0: Long): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException]) @native()