Class/Object

org.apache.spark.util

StatCounter

Related Docs: object StatCounter | package util

Permalink

class StatCounter extends Serializable

A class for tracking the statistics of a set of numbers (count, mean and variance) in a numerically robust way. Includes support for merging two StatCounters. Based on Welford and Chan's algorithms for running variance.

Source
StatCounter.scala
Linear Supertypes
Serializable, Serializable, AnyRef, Any
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. StatCounter
  2. Serializable
  3. Serializable
  4. AnyRef
  5. Any
  1. Hide All
  2. Show All
Visibility
  1. Public
  2. All

Instance Constructors

  1. new StatCounter()

    Permalink

    Initialize the StatCounter with no values.

  2. new StatCounter(values: TraversableOnce[Double])

    Permalink

    Initialize the StatCounter with the given values.

Value Members

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

    Permalink
    Definition Classes
    AnyRef → Any

  2. final def ##(): Int

    Permalink
    Definition Classes
    AnyRef → Any

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

    Permalink
    Definition Classes
    AnyRef → Any

  4. final def asInstanceOf[T0]: T0

    Permalink
    Definition Classes
    Any

  5. def clone(): AnyRef

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

  6. def copy(): StatCounter

    Permalink

    Clone this StatCounter

  7. def count: Long

    Permalink

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

    Permalink
    Definition Classes
    AnyRef

  9. def equals(arg0: Any): Boolean

    Permalink
    Definition Classes
    AnyRef → Any

  10. def finalize(): Unit

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

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

    Permalink
    Definition Classes
    AnyRef → Any

  12. def hashCode(): Int

    Permalink
    Definition Classes
    AnyRef → Any

  13. final def isInstanceOf[T0]: Boolean

    Permalink
    Definition Classes
    Any

  14. def max: Double

    Permalink

  15. def mean: Double

    Permalink

  16. def merge(other: StatCounter): StatCounter

    Permalink

    Merge another StatCounter into this one, adding up the internal statistics.

  17. def merge(values: TraversableOnce[Double]): StatCounter

    Permalink

    Add multiple values into this StatCounter, updating the internal statistics.

  18. def merge(value: Double): StatCounter

    Permalink

    Add a value into this StatCounter, updating the internal statistics.

  19. def min: Double

    Permalink

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

    Permalink
    Definition Classes
    AnyRef

  21. final def notify(): Unit

    Permalink
    Definition Classes
    AnyRef

  22. final def notifyAll(): Unit

    Permalink
    Definition Classes
    AnyRef

  23. def sampleStdev: Double

    Permalink

    Return the sample standard deviation of the values, which corrects for bias in estimating the variance by dividing by N-1 instead of N.

  24. def sampleVariance: Double

    Permalink

    Return the sample variance, which corrects for bias in estimating the variance by dividing by N-1 instead of N.

  25. def stdev: Double

    Permalink

    Return the standard deviation of the values.

  26. def sum: Double

    Permalink

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

    Permalink
    Definition Classes
    AnyRef

  28. def toString(): String

    Permalink
    Definition Classes
    StatCounter → AnyRef → Any

  29. def variance: Double

    Permalink

    Return the variance of the values.

  30. final def wait(): Unit

    Permalink
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Permalink
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

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

    Permalink
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped