Class

com.twitter.algebird

MinHasher16

Related Doc: package algebird

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class MinHasher16 extends MinHasher[Char]

Linear Supertypes
MinHasher[Char], Monoid[MinHashSignature], AdditiveMonoid[MinHashSignature], cats.kernel.Monoid[MinHashSignature], Semigroup[MinHashSignature], AdditiveSemigroup[MinHashSignature], cats.kernel.Semigroup[MinHashSignature], Serializable, Serializable, AnyRef, Any
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Inherited
  1. MinHasher16
  2. MinHasher
  3. Monoid
  4. AdditiveMonoid
  5. Monoid
  6. Semigroup
  7. AdditiveSemigroup
  8. Semigroup
  9. Serializable
  10. Serializable
  11. AnyRef
  12. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new MinHasher16(targetThreshold: Double, maxBytes: Int)

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  2. new MinHasher16(numHashes: Int, numBands: Int)

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Value Members

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

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    Definition Classes
    AnyRef → Any
  2. final def ##(): Int

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    Definition Classes
    AnyRef → Any
  3. final def ==(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any
  4. def additive: algebra.Monoid[MinHashSignature]

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    These are from algebra.Monoid

    These are from algebra.Monoid

    Definition Classes
    Monoid → AdditiveMonoid → Semigroup → AdditiveSemigroup
  5. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any
  6. def assertNotZero(v: MinHashSignature): Unit

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    Definition Classes
    Monoid
  7. def buckets(sig: MinHashSignature): List[Long]

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    Bucket keys to use for quickly finding other similar items via locality sensitive hashing

    Bucket keys to use for quickly finding other similar items via locality sensitive hashing

    Definition Classes
    MinHasher
  8. def buildArray(left: Array[Byte], right: Array[Byte])(fn: (Char, Char) ⇒ Char): Array[Byte]

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    Decode two signatures into hash values, combine them somehow, and produce a new array

    Decode two signatures into hash values, combine them somehow, and produce a new array

    Attributes
    protected
    Definition Classes
    MinHasher16MinHasher
  9. def buildArray(fn: ⇒ Char): Array[Byte]

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    Initialize a byte array by generating hash values

    Initialize a byte array by generating hash values

    Attributes
    protected
    Definition Classes
    MinHasher16MinHasher
  10. def clone(): AnyRef

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  11. def combine(l: MinHashSignature, r: MinHashSignature): MinHashSignature

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    Definition Classes
    Semigroup → Semigroup
  12. def combineAll(t: TraversableOnce[MinHashSignature]): MinHashSignature

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    Definition Classes
    Monoid → Monoid
  13. def combineAllOption(as: IterableOnce[MinHashSignature]): Option[MinHashSignature]

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    Definition Classes
    Monoid → Semigroup
  14. def combineN(a: MinHashSignature, n: Int): MinHashSignature

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    Definition Classes
    Monoid → Semigroup
  15. def empty: MinHashSignature

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    Definition Classes
    Monoid → Monoid
  16. final def eq(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef
  17. def equals(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any
  18. val estimatedThreshold: Double

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    Useful for understanding the effects of numBands and numRows

    Useful for understanding the effects of numBands and numRows

    Definition Classes
    MinHasher
  19. def finalize(): Unit

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  20. final def getClass(): Class[_]

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    Definition Classes
    AnyRef → Any
  21. def hashCode(): Int

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    Definition Classes
    AnyRef → Any
  22. def hashSize: Int

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    The number of bytes used for each hash in the signature

    The number of bytes used for each hash in the signature

    Definition Classes
    MinHasher16MinHasher
  23. def init(fn: (MurmurHash128) ⇒ (Long, Long)): MinHashSignature

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    Create a signature for an arbitrary value

    Create a signature for an arbitrary value

    Definition Classes
    MinHasher
  24. def init(value: String): MinHashSignature

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    Create a signature for a single String value

    Create a signature for a single String value

    Definition Classes
    MinHasher
  25. def init(value: Long): MinHashSignature

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    Create a signature for a single Long value

    Create a signature for a single Long value

    Definition Classes
    MinHasher
  26. def isEmpty(a: MinHashSignature)(implicit ev: Eq[MinHashSignature]): Boolean

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    Definition Classes
    Monoid
  27. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any
  28. def isNonZero(v: MinHashSignature): Boolean

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    Definition Classes
    Monoid
  29. def isZero(a: MinHashSignature)(implicit ev: Eq[MinHashSignature]): Boolean

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    Definition Classes
    AdditiveMonoid
  30. def maxHash: Char

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    Maximum value the hash can take on (not 2*hashSize because of signed types)

    Maximum value the hash can take on (not 2*hashSize because of signed types)

    Definition Classes
    MinHasher16MinHasher
  31. final def ne(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef
  32. def nonZeroOption(v: MinHashSignature): Option[MinHashSignature]

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    Definition Classes
    Monoid
  33. final def notify(): Unit

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    Definition Classes
    AnyRef
  34. final def notifyAll(): Unit

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    Definition Classes
    AnyRef
  35. val numBands: Int

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    Definition Classes
    MinHasher
  36. val numBytes: Int

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    For explanation of the "bands" and "rows" see Ullman and Rajaraman

    For explanation of the "bands" and "rows" see Ullman and Rajaraman

    Definition Classes
    MinHasher
  37. val numHashes: Int

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    Definition Classes
    MinHasher
  38. val numRows: Int

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    Definition Classes
    MinHasher
  39. def plus(left: MinHashSignature, right: MinHashSignature): MinHashSignature

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    Set union

    Set union

    Definition Classes
    MinHasher → AdditiveSemigroup
  40. def positiveSumN(a: MinHashSignature, n: Int): MinHashSignature

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    Attributes
    protected[this]
    Definition Classes
    AdditiveSemigroup
  41. def probabilityOfInclusion(sim: Double): Double

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    Useful for understanding the effects of numBands and numRows

    Useful for understanding the effects of numBands and numRows

    Definition Classes
    MinHasher
  42. def repeatedCombineN(a: MinHashSignature, n: Int): MinHashSignature

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    Attributes
    protected[this]
    Definition Classes
    Semigroup
  43. def similarity(left: MinHashSignature, right: MinHashSignature): Double

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    Esimate Jaccard similarity (size of union / size of intersection)

    Esimate Jaccard similarity (size of union / size of intersection)

    Definition Classes
    MinHasher
  44. def sum(vs: TraversableOnce[MinHashSignature]): MinHashSignature

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    Definition Classes
    Monoid → AdditiveMonoid
  45. def sumN(a: MinHashSignature, n: Int): MinHashSignature

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    Definition Classes
    AdditiveMonoid → AdditiveSemigroup
  46. def sumOption(iter: TraversableOnce[MinHashSignature]): Option[MinHashSignature]

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    Returns an instance of T calculated by summing all instances in iter in one pass.

    Returns an instance of T calculated by summing all instances in iter in one pass. Returns None if iter is empty, else Some[T].

    iter

    instances of T to be combined

    returns

    None if iter is empty, else an option value containing the summed T

    Definition Classes
    Semigroup
    Note

    Override if there is a faster way to compute this sum than iter.reduceLeftOption using plus.

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

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    Definition Classes
    AnyRef
  48. def toString(): String

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    Definition Classes
    AnyRef → Any
  49. def trySum(as: TraversableOnce[MinHashSignature]): Option[MinHashSignature]

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    Definition Classes
    AdditiveMonoid → AdditiveSemigroup
  50. final def wait(): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  51. final def wait(arg0: Long, arg1: Int): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  52. final def wait(arg0: Long): Unit

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  53. val zero: MinHashSignature

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    Signature for empty set, needed to be a proper Monoid

    Signature for empty set, needed to be a proper Monoid

    Definition Classes
    MinHasher → AdditiveMonoid

Inherited from MinHasher[Char]

Inherited from Monoid[MinHashSignature]

Inherited from AdditiveMonoid[MinHashSignature]

Inherited from cats.kernel.Monoid[MinHashSignature]

Inherited from Semigroup[MinHashSignature]

Inherited from AdditiveSemigroup[MinHashSignature]

Inherited from cats.kernel.Semigroup[MinHashSignature]

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped