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
- Alphabetic
- By Inheritance
- CountMinSketch
- AnyRef
- Any
- by any2stringadd
- by StringFormat
- by Ensuring
- by ArrowAssoc
- Hide All
- Show All
- Public
- Protected
Value Members
- final def !=(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- final def ##: Int
- Definition Classes
- AnyRef → Any
- 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
- 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()
- final def ==(arg0: Any): Boolean
- Definition Classes
- AnyRef → Any
- def addObjectAndEstimateCount(item: AnyRef, count: Long): Long
Similar to
add
, however we reuse the fact that the hask buckets have to be calculated foradd
already, and a separateestimateCount
operation would have to calculate them again, so we do it all in one go. - final def asInstanceOf[T0]: T0
- Definition Classes
- Any
- def clone(): AnyRef
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.CloneNotSupportedException]) @HotSpotIntrinsicCandidate() @native()
- def confidence(): Double
- 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
- 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
- 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
- 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
- final def eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
- def equals(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef → Any
- def estimateCount(item: AnyRef): Long
The estimate is correct within
'epsilon' * (total item count)
, with probabilityconfidence
. - final def getClass(): Class[_ <: AnyRef]
- Definition Classes
- AnyRef → Any
- Annotations
- @HotSpotIntrinsicCandidate() @native()
- def hashCode(): Int
- Definition Classes
- AnyRef → Any
- Annotations
- @HotSpotIntrinsicCandidate() @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
- @HotSpotIntrinsicCandidate() @native()
- final def notifyAll(): Unit
- Definition Classes
- AnyRef
- Annotations
- @HotSpotIntrinsicCandidate() @native()
- def relativeError(): Double
Referred to as
epsilon
in the whitepaper - def size(): Long
- final def synchronized[T0](arg0: => T0): T0
- Definition Classes
- AnyRef
- def toString(): String
- Definition Classes
- CountMinSketch → AnyRef → Any
- Annotations
- @Override()
- 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()
- final def wait(): Unit
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.InterruptedException])
Deprecated Value Members
- def finalize(): Unit
- Attributes
- protected[lang]
- Definition Classes
- AnyRef
- Annotations
- @throws(classOf[java.lang.Throwable]) @Deprecated
- Deprecated
(Since version 9)
- 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 ofvalue.formatted(formatString)
, or use thef""
string interpolator. In Java 15 and later,formatted
resolves to the new method in String which has reversed parameters.
- 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.