Class

ml.dmlc.mxnet.io

NDArrayIter

Related Doc: package io

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class NDArrayIter extends DataIter

NDArrayIter object in mxnet. Taking NDArray to get dataiter.

Linear Supertypes
DataIter, Iterator[DataBatch], TraversableOnce[DataBatch], GenTraversableOnce[DataBatch], AnyRef, Any
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Inherited
  1. NDArrayIter
  2. DataIter
  3. Iterator
  4. TraversableOnce
  5. GenTraversableOnce
  6. AnyRef
  7. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new NDArrayIter(data: IndexedSeq[NDArray], label: IndexedSeq[NDArray] = IndexedSeq.empty, dataBatchSize: Int = 1, shuffle: Boolean = false, lastBatchHandle: String = "pad", dataName: String = "data", labelName: String = "label")

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    data

    NDArrayIter supports single or multiple data and label.

    label

    Same as data, but is not fed to the model during testing.

    dataBatchSize

    Batch Size

    shuffle

    Whether to shuffle the data

    lastBatchHandle

    "pad", "discard" or "roll_over". How to handle the last batch This iterator will pad, discard or roll over the last batch if the size of data does not match batch_size. Roll over is intended for training and can cause problems if used for prediction.

Type Members

  1. class GroupedIterator[B >: A] extends AbstractIterator[Seq[B]] with Iterator[Seq[B]]

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    Definition Classes
    Iterator

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. def ++[B >: DataBatch](that: ⇒ GenTraversableOnce[B]): Iterator[B]

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    Definition Classes
    Iterator
  4. def /:[B](z: B)(op: (B, DataBatch) ⇒ B): B

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  5. def :\[B](z: B)(op: (DataBatch, B) ⇒ B): B

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  6. final def ==(arg0: Any): Boolean

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    Definition Classes
    AnyRef → Any
  7. def addString(b: StringBuilder): StringBuilder

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    Definition Classes
    TraversableOnce
  8. def addString(b: StringBuilder, sep: String): StringBuilder

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    Definition Classes
    TraversableOnce
  9. def addString(b: StringBuilder, start: String, sep: String, end: String): StringBuilder

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    Definition Classes
    TraversableOnce
  10. def aggregate[B](z: ⇒ B)(seqop: (B, DataBatch) ⇒ B, combop: (B, B) ⇒ B): B

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  11. final def asInstanceOf[T0]: T0

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    Definition Classes
    Any
  12. def batchSize: Int

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    Definition Classes
    NDArrayIterDataIter
  13. def buffered: BufferedIterator[DataBatch]

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    Definition Classes
    Iterator
  14. def clone(): AnyRef

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  15. def collect[B](pf: PartialFunction[DataBatch, B]): Iterator[B]

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    Definition Classes
    Iterator
    Annotations
    @migration
    Migration

    (Changed in version 2.8.0) collect has changed. The previous behavior can be reproduced with toSeq.

  16. def collectFirst[B](pf: PartialFunction[DataBatch, B]): Option[B]

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    Definition Classes
    TraversableOnce
  17. def contains(elem: Any): Boolean

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    Definition Classes
    Iterator
  18. def copyToArray[B >: DataBatch](xs: Array[B], start: Int, len: Int): Unit

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    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce
  19. def copyToArray[B >: DataBatch](xs: Array[B]): Unit

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  20. def copyToArray[B >: DataBatch](xs: Array[B], start: Int): Unit

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  21. def copyToBuffer[B >: DataBatch](dest: Buffer[B]): Unit

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    Definition Classes
    TraversableOnce
  22. def corresponds[B](that: GenTraversableOnce[B])(p: (DataBatch, B) ⇒ Boolean): Boolean

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    Definition Classes
    Iterator
  23. def count(p: (DataBatch) ⇒ Boolean): Int

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  24. var cursor: Int

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  25. def defaultBucketKey: AnyRef

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    Definition Classes
    DataIter
  26. def drop(n: Int): Iterator[DataBatch]

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    Definition Classes
    Iterator
  27. def dropWhile(p: (DataBatch) ⇒ Boolean): Iterator[DataBatch]

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    Definition Classes
    Iterator
  28. def duplicate: (Iterator[DataBatch], Iterator[DataBatch])

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    Definition Classes
    Iterator
  29. final def eq(arg0: AnyRef): Boolean

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

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    Definition Classes
    AnyRef → Any
  31. def exists(p: (DataBatch) ⇒ Boolean): Boolean

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    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce
  32. def filter(p: (DataBatch) ⇒ Boolean): Iterator[DataBatch]

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    Definition Classes
    Iterator
  33. def filterNot(p: (DataBatch) ⇒ Boolean): Iterator[DataBatch]

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    Definition Classes
    Iterator
  34. def finalize(): Unit

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    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  35. def find(p: (DataBatch) ⇒ Boolean): Option[DataBatch]

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    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce
  36. def flatMap[B](f: (DataBatch) ⇒ GenTraversableOnce[B]): Iterator[B]

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    Definition Classes
    Iterator
  37. def fold[A1 >: DataBatch](z: A1)(op: (A1, A1) ⇒ A1): A1

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  38. def foldLeft[B](z: B)(op: (B, DataBatch) ⇒ B): B

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  39. def foldRight[B](z: B)(op: (DataBatch, B) ⇒ B): B

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  40. def forall(p: (DataBatch) ⇒ Boolean): Boolean

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    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce
  41. def foreach[U](f: (DataBatch) ⇒ U): Unit

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    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce
  42. final def getClass(): Class[_]

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    Definition Classes
    AnyRef → Any
  43. def getData(): IndexedSeq[NDArray]

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    get data of current batch

    get data of current batch

    returns

    the data of current batch

    Definition Classes
    NDArrayIterDataIter
  44. def getIndex(): IndexedSeq[Long]

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    the index of current batch

    the index of current batch

    Definition Classes
    NDArrayIterDataIter
  45. def getLabel(): IndexedSeq[NDArray]

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    Get label of current batch

    Get label of current batch

    returns

    the label of current batch

    Definition Classes
    NDArrayIterDataIter
  46. def getPad(): MXUint

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    get the number of padding examples in current batch

    get the number of padding examples in current batch

    returns

    number of padding examples in current batch

    Definition Classes
    NDArrayIterDataIter
  47. def grouped[B >: DataBatch](size: Int): GroupedIterator[B]

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    Definition Classes
    Iterator
  48. def hardReset(): Unit

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    Igore roll over data and set to start

  49. def hasDefiniteSize: Boolean

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    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce
  50. def hasNext: Boolean

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    Definition Classes
    NDArrayIter → Iterator
  51. def hashCode(): Int

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    Definition Classes
    AnyRef → Any
  52. def indexOf[B >: DataBatch](elem: B): Int

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    Definition Classes
    Iterator
  53. def indexWhere(p: (DataBatch) ⇒ Boolean): Int

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    Definition Classes
    Iterator
  54. val initData: IndexedSeq[(String, NDArray)]

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  55. val initLabel: IndexedSeq[(String, NDArray)]

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  56. def isEmpty: Boolean

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    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce
  57. final def isInstanceOf[T0]: Boolean

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    Definition Classes
    Any
  58. def isTraversableAgain: Boolean

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    Definition Classes
    Iterator → GenTraversableOnce
  59. def length: Int

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    Definition Classes
    Iterator
  60. def map[B](f: (DataBatch) ⇒ B): Iterator[B]

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    Definition Classes
    Iterator
  61. def max[B >: DataBatch](implicit cmp: Ordering[B]): DataBatch

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  62. def maxBy[B](f: (DataBatch) ⇒ B)(implicit cmp: Ordering[B]): DataBatch

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  63. def min[B >: DataBatch](implicit cmp: Ordering[B]): DataBatch

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  64. def minBy[B](f: (DataBatch) ⇒ B)(implicit cmp: Ordering[B]): DataBatch

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  65. def mkString: String

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  66. def mkString(sep: String): String

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  67. def mkString(start: String, sep: String, end: String): String

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  68. final def ne(arg0: AnyRef): Boolean

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    Definition Classes
    AnyRef
  69. def next(): DataBatch

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    get next data batch from iterator

    get next data batch from iterator

    Definition Classes
    NDArrayIterDataIter → Iterator
    Annotations
    @throws( classOf[NoSuchElementException] )
  70. def nonEmpty: Boolean

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  71. final def notify(): Unit

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

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    Definition Classes
    AnyRef
  73. val numData: Int

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  74. val numSource: Int

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  75. def padTo[A1 >: DataBatch](len: Int, elem: A1): Iterator[A1]

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    Definition Classes
    Iterator
  76. def partition(p: (DataBatch) ⇒ Boolean): (Iterator[DataBatch], Iterator[DataBatch])

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    Definition Classes
    Iterator
  77. def patch[B >: DataBatch](from: Int, patchElems: Iterator[B], replaced: Int): Iterator[B]

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    Definition Classes
    Iterator
  78. def product[B >: DataBatch](implicit num: Numeric[B]): B

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  79. def provideData: ListMap[String, Shape]

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    Definition Classes
    NDArrayIterDataIter
  80. def provideLabel: ListMap[String, Shape]

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    Definition Classes
    NDArrayIterDataIter
  81. def reduce[A1 >: DataBatch](op: (A1, A1) ⇒ A1): A1

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  82. def reduceLeft[B >: DataBatch](op: (B, DataBatch) ⇒ B): B

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    Definition Classes
    TraversableOnce
  83. def reduceLeftOption[B >: DataBatch](op: (B, DataBatch) ⇒ B): Option[B]

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  84. def reduceOption[A1 >: DataBatch](op: (A1, A1) ⇒ A1): Option[A1]

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  85. def reduceRight[B >: DataBatch](op: (DataBatch, B) ⇒ B): B

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  86. def reduceRightOption[B >: DataBatch](op: (DataBatch, B) ⇒ B): Option[B]

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  87. def reset(): Unit

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    reset the iterator

    reset the iterator

    Definition Classes
    NDArrayIterDataIter
  88. def reversed: List[DataBatch]

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    Attributes
    protected[this]
    Definition Classes
    TraversableOnce
  89. def sameElements(that: Iterator[_]): Boolean

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    Definition Classes
    Iterator
  90. def scanLeft[B](z: B)(op: (B, DataBatch) ⇒ B): Iterator[B]

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    Definition Classes
    Iterator
  91. def scanRight[B](z: B)(op: (DataBatch, B) ⇒ B): Iterator[B]

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    Definition Classes
    Iterator
  92. def seq: Iterator[DataBatch]

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    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce
  93. def size: Int

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  94. def slice(from: Int, until: Int): Iterator[DataBatch]

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    Definition Classes
    Iterator
  95. def sliding[B >: DataBatch](size: Int, step: Int): GroupedIterator[B]

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    Definition Classes
    Iterator
  96. def span(p: (DataBatch) ⇒ Boolean): (Iterator[DataBatch], Iterator[DataBatch])

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    Definition Classes
    Iterator
  97. def sum[B >: DataBatch](implicit num: Numeric[B]): B

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  98. final def synchronized[T0](arg0: ⇒ T0): T0

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    Definition Classes
    AnyRef
  99. def take(n: Int): Iterator[DataBatch]

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    Definition Classes
    Iterator
  100. def takeWhile(p: (DataBatch) ⇒ Boolean): Iterator[DataBatch]

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    Definition Classes
    Iterator
  101. def to[Col[_]](implicit cbf: CanBuildFrom[Nothing, DataBatch, Col[DataBatch]]): Col[DataBatch]

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  102. def toArray[B >: DataBatch](implicit arg0: ClassTag[B]): Array[B]

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  103. def toBuffer[B >: DataBatch]: Buffer[B]

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  104. def toIndexedSeq: IndexedSeq[DataBatch]

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  105. def toIterable: Iterable[DataBatch]

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  106. def toIterator: Iterator[DataBatch]

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    Definition Classes
    Iterator → GenTraversableOnce
  107. def toList: List[DataBatch]

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  108. def toMap[T, U](implicit ev: <:<[DataBatch, (T, U)]): Map[T, U]

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  109. def toSeq: Seq[DataBatch]

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  110. def toSet[B >: DataBatch]: Set[B]

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  111. def toStream: Stream[DataBatch]

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    Definition Classes
    Iterator → GenTraversableOnce
  112. def toString(): String

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    Definition Classes
    Iterator → AnyRef → Any
  113. def toTraversable: Traversable[DataBatch]

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    Definition Classes
    Iterator → TraversableOnce → GenTraversableOnce
  114. def toVector: Vector[DataBatch]

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    Definition Classes
    TraversableOnce → GenTraversableOnce
  115. final def wait(): Unit

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

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

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    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  118. def withFilter(p: (DataBatch) ⇒ Boolean): Iterator[DataBatch]

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    Definition Classes
    Iterator
  119. def zip[B](that: Iterator[B]): Iterator[(DataBatch, B)]

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    Definition Classes
    Iterator
  120. def zipAll[B, A1 >: DataBatch, B1 >: B](that: Iterator[B], thisElem: A1, thatElem: B1): Iterator[(A1, B1)]

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    Definition Classes
    Iterator
  121. def zipWithIndex: Iterator[(DataBatch, Int)]

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    Definition Classes
    Iterator

Inherited from DataIter

Inherited from Iterator[DataBatch]

Inherited from TraversableOnce[DataBatch]

Inherited from GenTraversableOnce[DataBatch]

Inherited from AnyRef

Inherited from Any

Ungrouped