SequenceReverseLayer

SequenceReverseLayer[]

represents a net that reverses the order of an input sequence.

Details and Options

  • SequenceReverseLayer[] represents a net that takes a sequence of arrays and outputs a sequence of the same length.
  • SequenceReverseLayer[…][input] explicitly computes the output from applying the layer.
  • SequenceReverseLayer[…][{input1,input2,…}] explicitly computes an output for each of the inputi.
  • When given a NumericArray as input, the output will be a NumericArray.
  • SequenceReverseLayer is typically used inside NetChain, NetGraph, etc.
  • The input and output ports of the net represented by SequenceReverseLayer[] are:
  • "Input"a sequence of n arrays
    "Output"a sequence of n arrays
  • SequenceReverseLayer["Input"shape] allows the shape of the input to be specified. Possible forms for shape are:
  • na sequence of n numbers
    "Varying"a sequence of numbers of varying length
    {len,d1,d2,…}sequence of len arrays of dimensions d1×d2×…
    {"Varying",d1,d2,…}varying number of arrays of dimensions d1×d2×…
  • Options[SequenceReverseLayer] gives the list of default options to construct the layer. Options[SequenceReverseLayer[…]] gives the list of default options to evaluate the layer on some data.
  • Information[SequenceReverseLayer[…]] gives a report about the layer.
  • Information[SequenceReverseLayer[…],prop] gives the value of the property prop of SequenceReverseLayer[…]. Possible properties are the same as for NetGraph.

Examples

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Basic Examples  (2)

Create a SequenceReverseLayer:

Create a SequenceReverseLayer that expects a sequence of vectors of size 3:

Apply the layer to a sequence of vectors:

Scope  (3)

Create a SequenceReverseLayer that expects a length-3 sequence of 2×2 matrices:

Apply the layer to a sequence:

Create a SequenceReverseLayer that expects a sequence of real numbers:

Thread the layer across a batch of inputs:

Create a SequenceReverseLayer that reverses the order of color channels in an image:

Apply it to an image:

Applications  (1)

Define a bidirectional BasicRecurrentLayer:

NetBidirectionalOperator can be used to accomplish the same thing:

Possible Issues  (1)

SequenceReverseLayer cannot accept symbolic inputs:

Wolfram Research (2017), SequenceReverseLayer, Wolfram Language function, https://reference.wolfram.com/language/ref/SequenceReverseLayer.html.

Text

Wolfram Research (2017), SequenceReverseLayer, Wolfram Language function, https://reference.wolfram.com/language/ref/SequenceReverseLayer.html.

CMS

Wolfram Language. 2017. "SequenceReverseLayer." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/SequenceReverseLayer.html.

APA

Wolfram Language. (2017). SequenceReverseLayer. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/SequenceReverseLayer.html

BibTeX

@misc{reference.wolfram_2024_sequencereverselayer, author="Wolfram Research", title="{SequenceReverseLayer}", year="2017", howpublished="\url{https://reference.wolfram.com/language/ref/SequenceReverseLayer.html}", note=[Accessed: 21-November-2024 ]}

BibLaTeX

@online{reference.wolfram_2024_sequencereverselayer, organization={Wolfram Research}, title={SequenceReverseLayer}, year={2017}, url={https://reference.wolfram.com/language/ref/SequenceReverseLayer.html}, note=[Accessed: 21-November-2024 ]}