org.apache.mahout.classifier.stats

FullRunningAverageAndStdDev

class FullRunningAverageAndStdDev extends FullRunningAverage with RunningAverageAndStdDev

Extends FullRunningAverage to add a running standard deviation computation. Uses Welford's method, as described at http://www.johndcook.com/standard_deviation.html

Ported from org.apache.mahout.cf.taste.impl.common.FullRunningAverageAndStdDev.java

Linear Supertypes
RunningAverageAndStdDev, FullRunningAverage, RunningAverage, AnyRef, Any
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Inherited
  1. FullRunningAverageAndStdDev
  2. RunningAverageAndStdDev
  3. FullRunningAverage
  4. RunningAverage
  5. AnyRef
  6. Any
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  1. Public
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Instance Constructors

  1. new FullRunningAverageAndStdDev(count: Int = 0, average: Double = 0.0, mk: Double = 0.0, sk: Double = 0.0)

Value Members

  1. final def !=(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  2. final def !=(arg0: Any): Boolean

    Definition Classes
    Any

  3. final def ##(): Int

    Definition Classes
    AnyRef → Any

  4. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  5. final def ==(arg0: Any): Boolean

    Definition Classes
    Any

  6. def addDatum(datum: Double): Unit

    datum

    new item to add to the running average

    Definition Classes
    FullRunningAverageAndStdDev → FullRunningAverage → RunningAverage

  7. final def asInstanceOf[T0]: T0

    Definition Classes
    Any

  8. def changeDatum(delta: Double): Unit

    delta

    amount by which to change a datum in the running average

    Definition Classes
    FullRunningAverageAndStdDev → FullRunningAverage → RunningAverage
    Exceptions thrown
    UnsupportedOperationException

  9. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  10. final def eq(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  11. def equals(arg0: Any): Boolean

    Definition Classes
    AnyRef → Any

  12. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )

  13. def getAverage: Double

    Definition Classes
    FullRunningAverage → RunningAverage

  14. final def getClass(): Class[_]

    Definition Classes
    AnyRef → Any

  15. def getCount: Int

    Definition Classes
    FullRunningAverage → RunningAverage

  16. def getMk: Double

  17. def getSk: Double

  18. def getStandardDeviation: Double

    returns

    standard deviation of data

    Definition Classes
    FullRunningAverageAndStdDev → RunningAverageAndStdDev

  19. def hashCode(): Int

    Definition Classes
    AnyRef → Any

  20. def inverse: RunningAverageAndStdDev

    returns

    a (possibly immutable) object whose average is the negative of this object's

    Definition Classes
    FullRunningAverageAndStdDev → RunningAverageAndStdDev → FullRunningAverage → RunningAverage

  21. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any

  22. final def ne(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef

  23. final def notify(): Unit

    Definition Classes
    AnyRef

  24. final def notifyAll(): Unit

    Definition Classes
    AnyRef

  25. def removeDatum(datum: Double): Unit

    datum

    item to remove from the running average

    Definition Classes
    FullRunningAverageAndStdDev → FullRunningAverage → RunningAverage
    Exceptions thrown
    IllegalStateException

    if count is 0

  26. var stdDev: Double

  27. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef

  28. def toString(): String

    Definition Classes
    FullRunningAverageAndStdDev → FullRunningAverage → AnyRef → Any

  29. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  30. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  31. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from RunningAverageAndStdDev

Inherited from FullRunningAverage

Inherited from RunningAverage

Inherited from AnyRef

Inherited from Any

Ungrouped