Class

com.twitter.scalding.mathematics

ExactInCosine

Related Doc: package mathematics

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class ExactInCosine[N] extends TypedSimilarity[N, InDegree, Double]

This algothm is just matrix multiplication done by hand to make it clearer when we do the sampling implementation

Source
TypedSimilarity.scala
Linear Supertypes
TypedSimilarity[N, InDegree, Double], Serializable, AnyRef, Any
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  1. ExactInCosine
  2. TypedSimilarity
  3. Serializable
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Visibility
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Instance Constructors

  1. new ExactInCosine(reducers: Int = 1)(implicit nodeOrdering: Ordering[N])

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Value Members

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

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

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

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  4. def apply(graph: typed.TypedPipe[Edge[N, InDegree]], smallpred: (N) ⇒ Boolean, bigpred: (N) ⇒ Boolean): typed.TypedPipe[Edge[N, Double]]

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    Given a TypedPipe of edges, and a predicate for a smaller group (smallpred) of nodes and a bigger group (bigpred), compute the similarity between each item in the two sets The Edge.from nodes in the result will all satisfy smallpred, and the Edge.to will all satisfy bigpred.

    Given a TypedPipe of edges, and a predicate for a smaller group (smallpred) of nodes and a bigger group (bigpred), compute the similarity between each item in the two sets The Edge.from nodes in the result will all satisfy smallpred, and the Edge.to will all satisfy bigpred. It is more efficient if you keep the smallpred set smaller.

    Definition Classes
    ExactInCosineTypedSimilarity
  5. def apply(g: typed.TypedPipe[Edge[N, InDegree]]): typed.TypedPipe[Edge[N, Double]]

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    Definition Classes
    TypedSimilarity
  6. final def asInstanceOf[T0]: T0

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  7. def clone(): AnyRef

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    protected[java.lang]
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  8. final def eq(arg0: AnyRef): Boolean

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    AnyRef
  9. def equals(arg0: Any): Boolean

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  10. def finalize(): Unit

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    @throws( classOf[java.lang.Throwable] )
  11. final def getClass(): Class[_]

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  12. def hashCode(): Int

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  13. final def isInstanceOf[T0]: Boolean

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

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  15. implicit val nodeOrdering: Ordering[N]

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    Definition Classes
    ExactInCosineTypedSimilarity
  16. final def notify(): Unit

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    AnyRef
  17. final def notifyAll(): Unit

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

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  19. def toString(): String

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  20. final def wait(): Unit

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    @throws( ... )
  21. final def wait(arg0: Long, arg1: Int): Unit

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  22. final def wait(arg0: Long): Unit

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Inherited from TypedSimilarity[N, InDegree, Double]

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

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