trait Transformer[A, B] extends Serializable

Transform a data stream of type A to type B. It is usually used in data pre-process stage. Different transformers can compose a pipeline. For example, if there're transformer1 from A to B, transformer2 from B to C, and transformer3 from C to D, you can compose them into a bigger transformer from A to D by transformer1 -> transformer2 -> transformer 3.

The purpose of transformer is for code reuse. Many deep learning share many common data pre-process steps. User needn't write them every time, but can reuse others work.

Transformer can be used with RDD(rdd.mapPartition), iterator and DataSet.

Linear Supertypes
Serializable, Serializable, AnyRef, Any
Known Subclasses
ChainedTransformer, Identity, SampleToMiniBatch, RowTransformer, BGRImgCropper, BGRImgNormalizer, BGRImgPixelNormalizer, BGRImgRdmCropper, BGRImgToBatch, BGRImgToImageVector, BGRImgToLocalSeqFile, BGRImgToSample, BytesToBGRImg, BytesToGreyImg, ColorJitter, GreyImgCropper, GreyImgNormalizer, GreyImgToBatch, GreyImgToSample, HFlip, Lighting, LocalResizeImgReader, LocalResizeImgWithName, LocalScaleImgReader, LocalScaleImgWithName, LocalSeqFileToBytes, MTLabeledBGRImgToBatch, LabeledSentenceToSample, SentenceBiPadding, SentenceSplitter, SentenceTokenizer, TextToLabeledSentence, RowToByteRecords, toAutoencoderBatch, BytesToMat, ChainedFeatureTransformer, ClassificationMTImageFeatureToBatch, FeatureTransformer, ImageFeatureToMiniBatch, ImageFrameToSample, MTImageFeatureToBatch, MatToFloats, MatToTensor, PixelBytesToMat, RoiImageFeatureToBatch, RoiImageFeatureToBatchWithResize, AspectScale, Brightness, CenterCrop, ChannelNormalize, ChannelOrder, ChannelScaledNormalizer, ColorJitter, Contrast, Crop, DetectionCrop, Expand, Filler, FixExpand, FixedCrop, HFlip, Hue, PixelNormalizer, RandomAlterAspect, RandomAspectScale, RandomCrop, RandomCropper, RandomResize, RandomTransformer, Resize, Saturation, ScaleResize, RandomSampler, RoiHFlip, RoiNormalize, RoiProject, RoiResize, SampleToBatch
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  1. Transformer
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Abstract Value Members

  1. abstract def apply(prev: Iterator[A]): Iterator[B]

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. def ->[C](other: Transformer[B, C]): Transformer[A, C]
  4. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  5. def apply(dataset: RDD[A])(implicit evidence: ClassTag[B]): RDD[B]

    Apply this transformer to rdd

  6. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  7. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )
  8. def cloneTransformer(): Transformer[A, B]
  9. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  10. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  11. def finalize(): Unit
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  12. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  13. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  14. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  15. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  16. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  17. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  18. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  19. def toString(): String
    Definition Classes
    AnyRef → Any
  20. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  21. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  22. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )

Inherited from Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

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