Packages

c

akka.remote.artery.compress

CountMinSketch

class CountMinSketch extends AnyRef

INTERNAL API: Count-Min Sketch datastructure.

Not thread-safe.

An Improved Data Stream Summary: The Count-Min Sketch and its Applications https://web.archive.org/web/20060907232042/http://www.eecs.harvard.edu/~michaelm/CS222/countmin.pdf This implementation is mostly taken and adjusted from the Apache V2 licensed project stream-lib, located here: https://github.com/clearspring/stream-lib/blob/master/src/main/java/com/clearspring/analytics/stream/frequency/CountMinSketch.java

Source
CountMinSketch.java
Linear Supertypes
AnyRef, Any
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Inherited
  1. CountMinSketch
  2. AnyRef
  3. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new CountMinSketch(depth: Int, width: Int, seed: Int)

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from CountMinSketch to any2stringadd[CountMinSketch] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (CountMinSketch, B)
    Implicit
    This member is added by an implicit conversion from CountMinSketch to ArrowAssoc[CountMinSketch] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  5. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  6. def addObjectAndEstimateCount(item: Any, count: Long): Long

    Similar to add, however we reuse the fact that the hask buckets have to be calculated for add already, and a separate estimateCount operation would have to calculate them again, so we do it all in one go.

  7. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  8. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  9. def confidence(): Double
  10. def ensuring(cond: (CountMinSketch) ⇒ Boolean, msg: ⇒ Any): CountMinSketch
    Implicit
    This member is added by an implicit conversion from CountMinSketch to Ensuring[CountMinSketch] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  11. def ensuring(cond: (CountMinSketch) ⇒ Boolean): CountMinSketch
    Implicit
    This member is added by an implicit conversion from CountMinSketch to Ensuring[CountMinSketch] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  12. def ensuring(cond: Boolean, msg: ⇒ Any): CountMinSketch
    Implicit
    This member is added by an implicit conversion from CountMinSketch to Ensuring[CountMinSketch] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  13. def ensuring(cond: Boolean): CountMinSketch
    Implicit
    This member is added by an implicit conversion from CountMinSketch to Ensuring[CountMinSketch] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  14. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  15. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  16. def estimateCount(item: Any): Long

    The estimate is correct within 'epsilon' * (total item count), with probability confidence.

  17. def finalize(): Unit
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  18. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from CountMinSketch to StringFormat[CountMinSketch] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()
  19. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
  20. def hashCode(): Int
    Definition Classes
    AnyRef → Any
  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 relativeError(): Double

    Referred to as epsilon in the whitepaper

  26. def size(): Long
  27. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  28. def toString(): String
    Definition Classes
    CountMinSketch → 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( ... )
  32. def →[B](y: B): (CountMinSketch, B)
    Implicit
    This member is added by an implicit conversion from CountMinSketch to ArrowAssoc[CountMinSketch] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd from CountMinSketch to any2stringadd[CountMinSketch]

Inherited by implicit conversion StringFormat from CountMinSketch to StringFormat[CountMinSketch]

Inherited by implicit conversion Ensuring from CountMinSketch to Ensuring[CountMinSketch]

Inherited by implicit conversion ArrowAssoc from CountMinSketch to ArrowAssoc[CountMinSketch]

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