Trait

org.apache.spark.util.random

RandomSampler

Related Doc: package random

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trait RandomSampler[T, U] extends Pseudorandom with Cloneable with Serializable

:: DeveloperApi :: A pseudorandom sampler. It is possible to change the sampled item type. For example, we might want to add weights for stratified sampling or importance sampling. Should only use transformations that are tied to the sampler and cannot be applied after sampling.

T

item type

U

sampled item type

Annotations
@DeveloperApi()
Source
RandomSampler.scala
Linear Supertypes
Serializable, Serializable, Cloneable, Cloneable, Pseudorandom, AnyRef, Any
Known Subclasses
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Inherited
  1. RandomSampler
  2. Serializable
  3. Serializable
  4. Cloneable
  5. Cloneable
  6. Pseudorandom
  7. AnyRef
  8. Any
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Visibility
  1. Public
  2. All

Abstract Value Members

  1. abstract def sample(): Int

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    Whether to sample the next item or not.

    Whether to sample the next item or not. Return how many times the next item will be sampled. Return 0 if it is not sampled.

  2. abstract def setSeed(seed: Long): Unit

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    Set random seed.

    Set random seed.

    Definition Classes
    Pseudorandom

Concrete 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. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any
  5. def clone(): RandomSampler[T, U]

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    return a copy of the RandomSampler object

    return a copy of the RandomSampler object

    Definition Classes
    RandomSampler → AnyRef
  6. final def eq(arg0: AnyRef): Boolean

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

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    Definition Classes
    AnyRef → Any
  8. def finalize(): Unit

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

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

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    Definition Classes
    AnyRef → Any
  11. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any
  12. final def ne(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef
  13. final def notify(): Unit

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

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    Definition Classes
    AnyRef
  15. def sample(items: Iterator[T]): Iterator[U]

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    take a random sample

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

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    Definition Classes
    AnyRef
  17. def toString(): String

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    Definition Classes
    AnyRef → Any
  18. final def wait(): Unit

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

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )

Inherited from Serializable

Inherited from Serializable

Inherited from Cloneable

Inherited from Cloneable

Inherited from Pseudorandom

Inherited from AnyRef

Inherited from Any

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