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com.twitter.algebird

CMSFunctions

object CMSFunctions

Helper functions to generate or to translate between various CMS parameters (cf. CMSParams).

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  1. final def !=(arg0: Any): Boolean
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  2. final def ##: Int
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  3. final def ==(arg0: Any): Boolean
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  4. final def asInstanceOf[T0]: T0
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  5. def clone(): AnyRef
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    protected[lang]
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    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  6. def delta(depth: Int): Double

    Translates from depth to delta.

    Translates from depth to delta.

    Annotations
    @throws("if depth is too large, causing precision errors when computing delta")
  7. def depth(delta: Double): Int

    Translates from delta to depth.

    Translates from delta to depth.

    Annotations
    @throws("if delta is is not in (0, 1)")
  8. def eps(width: Int): Double

    Translates from width to eps.

  9. final def eq(arg0: AnyRef): Boolean
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  10. def equals(arg0: AnyRef): Boolean
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  11. def finalize(): Unit
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    protected[lang]
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    @throws(classOf[java.lang.Throwable])
  12. def generateHashes[K](eps: Double, delta: Double, seed: Int)(implicit arg0: CMSHasher[K]): Seq[CMSHash[K]]

    Generates N=depth pair-wise independent hash functions.

    Generates N=depth pair-wise independent hash functions.

    K

    The type used to identify the elements to be counted.

    eps

    One-sided error bound on the error of each point query, i.e. frequency estimate.

    delta

    Error bound on the probability that a query estimate does NOT lie within some small interval around the truth.

    seed

    Seed for the random number generator.

    returns

    The generated hash functions.

  13. final def getClass(): Class[_ <: AnyRef]
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    @native()
  14. def hashCode(): Int
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    @native()
  15. final def isInstanceOf[T0]: Boolean
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  16. def maxExactCount(maxExactCountOpt: Option[Int], depth: Int, width: Int): Int

    Compute maxExactCount from parameters or depth and width

  17. final def ne(arg0: AnyRef): Boolean
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  18. final def notify(): Unit
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    @native()
  19. final def notifyAll(): Unit
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    @native()
  20. final def synchronized[T0](arg0: => T0): T0
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  21. def toString(): String
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  22. final def wait(): Unit
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    @throws(classOf[java.lang.InterruptedException])
  23. final def wait(arg0: Long, arg1: Int): Unit
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    @throws(classOf[java.lang.InterruptedException])
  24. final def wait(arg0: Long): Unit
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    @throws(classOf[java.lang.InterruptedException]) @native()
  25. def width(eps: Double): Int

    Translates from eps to width.

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