Class/Object

org.apache.flink.ml.metrics.distances

CosineDistanceMetric

Related Docs: object CosineDistanceMetric | package distances

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class CosineDistanceMetric extends DistanceMetric

This class implements a cosine distance metric. The class calculates the distance between the given vectors by dividing the dot product of two vectors by the product of their lengths. We convert the result of division to a usable distance. So, 1 - cos(angle) is actually returned.

See also

http://en.wikipedia.org/wiki/Cosine_similarity

Linear Supertypes
DistanceMetric, Serializable, Serializable, AnyRef, Any
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  1. CosineDistanceMetric
  2. DistanceMetric
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Instance Constructors

  1. new CosineDistanceMetric()

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

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  4. final def asInstanceOf[T0]: T0

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    Any

  5. def checkValidArguments(a: Vector, b: Vector): Unit

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    Attributes
    protected
    Definition Classes
    DistanceMetric

  6. def clone(): AnyRef

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

  7. def distance(a: Vector, b: Vector): Double

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    Returns the distance between the arguments.

    Returns the distance between the arguments.

    a

    a Vector defining a multi-dimensional point in some space

    b

    a Vector defining a multi-dimensional point in some space

    returns

    a scalar double of the distance

    Definition Classes
    CosineDistanceMetric → DistanceMetric

  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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    protected[java.lang]
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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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    Any

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

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    AnyRef

  15. final def notify(): Unit

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    Definition Classes
    AnyRef

  16. final def notifyAll(): Unit

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

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  18. def toString(): String

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  19. final def wait(): Unit

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    @throws( ... )

  20. final def wait(arg0: Long, arg1: Int): Unit

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

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Inherited from DistanceMetric

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

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