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
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Type Hierarchy
Ordering
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  2. By Inheritance
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. Protected

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 toany2stringadd[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 toArrowAssoc[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: AnyRef, 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[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native() @HotSpotIntrinsicCandidate()
  9. def confidence(): Double
  10. def ensuring(cond: (CountMinSketch) => Boolean, msg: => Any): CountMinSketch
    Implicit
    This member is added by an implicit conversion from CountMinSketch toEnsuring[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 toEnsuring[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 toEnsuring[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 toEnsuring[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: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  16. def estimateCount(item: AnyRef): Long

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

  17. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  18. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  19. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  20. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  21. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  22. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  23. def relativeError(): Double

    Referred to as epsilon in the whitepaper

  24. def size(): Long
  25. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  26. def toString(): String
    Definition Classes
    CountMinSketch → AnyRef → Any
    Annotations
    @Override()
  27. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  28. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  29. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])

Deprecated Value Members

  1. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable]) @Deprecated
    Deprecated
  2. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from CountMinSketch toStringFormat[CountMinSketch] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.12.16) Use formatString.format(value) instead of value.formatted(formatString), or use the f"" string interpolator. In Java 15 and later, formatted resolves to the new method in String which has reversed parameters.

  3. def [B](y: B): (CountMinSketch, B)
    Implicit
    This member is added by an implicit conversion from CountMinSketch toArrowAssoc[CountMinSketch] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use -> instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd fromCountMinSketch to any2stringadd[CountMinSketch]

Inherited by implicit conversion StringFormat fromCountMinSketch to StringFormat[CountMinSketch]

Inherited by implicit conversion Ensuring fromCountMinSketch to Ensuring[CountMinSketch]

Inherited by implicit conversion ArrowAssoc fromCountMinSketch to ArrowAssoc[CountMinSketch]

Ungrouped