SequenceIndicesLayer

represents a net layer that produces a list of indices for an input sequence.

Details and Options

• takes a sequence of arrays and outputs a sequence of integers of the same length.
• SequenceIndicesLayer is typically used inside NetChain, NetGraph, etc.
• The following optional parameter can be included:
•  "Maximum" Infinity maximum index to output
• SequenceIndicesLayer["Maximum"max] corresponds to the function Min[max,Range[Length[#]]]&.
• The input and output ports of the net represented by are:
•  "Input" a sequence of n arrays "Output" a sequence of n arrays
• SequenceIndicesLayer["Input"shape] allows the shape of the input to be specified. Possible forms for shape include:
•  n a 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[SequenceIndicesLayer] gives the list of default options to construct the layer. Options[SequenceIndicesLayer[]] gives the list of default options to evaluate the layer on some data.
• Information[SequenceIndicesLayer[]] gives a report about the layer.
• Information[SequenceIndicesLayer[],prop] gives the value of the property prop of . Possible properties are the same as for NetGraph.

Examples

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Basic Examples(1)

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

Apply the layer to a sequence of vectors:

Scope(2)

Ports(2)

Create a SequenceIndicesLayer that expects a length-3 sequence of 2x2 matrices:

Apply the layer to a sequence:

Create a SequenceIndicesLayer that expects a sequence of real numbers:

Thread the layer across a batch of inputs:

Options(1)

"Maximum"(1)

Create a SequenceIndicesLayer that returns a maximum index of 3:

Apply the layer to a sequence:

Possible Issues(1)

SequenceIndicesLayer cannot accept symbolic inputs:

Wolfram Research (2021), SequenceIndicesLayer, Wolfram Language function, https://reference.wolfram.com/language/ref/SequenceIndicesLayer.html.

Text

Wolfram Research (2021), SequenceIndicesLayer, Wolfram Language function, https://reference.wolfram.com/language/ref/SequenceIndicesLayer.html.

CMS

Wolfram Language. 2021. "SequenceIndicesLayer." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/SequenceIndicesLayer.html.

APA

Wolfram Language. (2021). SequenceIndicesLayer. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/SequenceIndicesLayer.html

BibTeX

@misc{reference.wolfram_2024_sequenceindiceslayer, author="Wolfram Research", title="{SequenceIndicesLayer}", year="2021", howpublished="\url{https://reference.wolfram.com/language/ref/SequenceIndicesLayer.html}", note=[Accessed: 12-September-2024 ]}

BibLaTeX

@online{reference.wolfram_2024_sequenceindiceslayer, organization={Wolfram Research}, title={SequenceIndicesLayer}, year={2021}, url={https://reference.wolfram.com/language/ref/SequenceIndicesLayer.html}, note=[Accessed: 12-September-2024 ]}