com.twitter.algebird

MinHasher16

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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  1. Public
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Instance Constructors

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

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

Value Members

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

    Definition Classes
    AnyRef
  2. final def !=(arg0: Any): Boolean

    Definition Classes
    Any
  3. final def ##(): Int

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

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

    Definition Classes
    Any
  6. def additive: algebra.Monoid[MinHashSignature]

    These are from algebra.

    These are from algebra.Monoid

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

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

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

    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
  10. def buildArray(left: Array[Byte], right: Array[Byte])(fn: (Char, Char) ⇒ Char): Array[Byte]

    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
  11. def buildArray(fn: ⇒ Char): Array[Byte]

    Initialize a byte array by generating hash values

    Initialize a byte array by generating hash values

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

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

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

    Definition Classes
    Monoid → Monoid
  15. def combineAllOption(as: TraversableOnce[MinHashSignature]): Option[MinHashSignature]

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

    Definition Classes
    Monoid → Semigroup
  17. def empty: MinHashSignature

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

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

    Definition Classes
    AnyRef → Any
  20. val estimatedThreshold: Double

    Useful for understanding the effects of numBands and numRows

    Useful for understanding the effects of numBands and numRows

    Definition Classes
    MinHasher
  21. def finalize(): Unit

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

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

    Definition Classes
    AnyRef → Any
  24. def hashSize: Int

    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
  25. def init(fn: (MurmurHash128) ⇒ (Long, Long)): MinHashSignature

    Create a signature for an arbitrary value

    Create a signature for an arbitrary value

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

    Create a signature for a single String value

    Create a signature for a single String value

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

    Create a signature for a single Long value

    Create a signature for a single Long value

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

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

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

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

    Definition Classes
    AdditiveMonoid
  32. def maxHash: Char

    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
  33. final def ne(arg0: AnyRef): Boolean

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

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

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

    Definition Classes
    AnyRef
  37. val numBytes: Int

    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
  38. val numRows: Int

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

    Set union

    Set union

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

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

    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

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

    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

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

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

    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

    Definition Classes
    AnyRef
  48. def toString(): String

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

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

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

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

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

    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

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