org.apache.mxnet.io

NDArrayIter

Related Docs: object NDArrayIter | package io

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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  1. Public
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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")

    data

    Specify the data. Data names will be data_0, data_1, ..., etc.

    label

    Same as data, but is not fed to the model during testing. Label names will be label_0, label_1, ..., etc.

    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.

  2. new NDArrayIter(data: IndexedSeq[(String, NDArray)], label: IndexedSeq[(String, NDArray)], dataBatchSize: Int, shuffle: Boolean, lastBatchHandle: String)

    data

    Specify the data as well as the name. 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]]

    Definition Classes
    Iterator

Value Members

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

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

    Definition Classes
    AnyRef → Any
  3. def ++[B >: DataBatch](that: ⇒ GenTraversableOnce[B]): Iterator[B]

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

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

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

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

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

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

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

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

    Definition Classes
    Any
  12. def batchSize: Int

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

    Definition Classes
    Iterator
  14. def clone(): AnyRef

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

    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]

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

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

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

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

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

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

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

    Definition Classes
    TraversableOnce → GenTraversableOnce
  24. def defaultBucketKey: AnyRef

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

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

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

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

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

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

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

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

    Definition Classes
    Iterator
  33. def finalize(): Unit

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

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

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

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

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

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

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

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

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

    get data of current batch

    get data of current batch

    returns

    the data of current batch

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

    the index of current batch

    the index of current batch

    returns

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

    Get label of current batch

    Get label of current batch

    returns

    the label of current batch

    Definition Classes
    NDArrayIterDataIter
  45. def getPad(): MXUint

    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
  46. def grouped[B >: DataBatch](size: Int): GroupedIterator[B]

    Definition Classes
    Iterator
  47. def hardReset(): Unit

    Igore roll over data and set to start

  48. def hasDefiniteSize: Boolean

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

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

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

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

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

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

  55. def isEmpty: Boolean

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

    Definition Classes
    Any
  57. def isTraversableAgain: Boolean

    Definition Classes
    Iterator → GenTraversableOnce
  58. def length: Int

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

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

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

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

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

    Definition Classes
    TraversableOnce → GenTraversableOnce
  64. def mkString: String

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

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

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

    Definition Classes
    AnyRef
  68. def next(): DataBatch

    get next data batch from iterator

    get next data batch from iterator

    returns

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

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

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

    Definition Classes
    AnyRef
  72. val numData: Int

  73. val numSource: MXUint

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

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

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

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

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

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

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

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

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

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

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

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

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

    reset the iterator

    reset the iterator

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    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