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Wolfram Language & System Documentation Center
NetFlatten
  • See Also
    • NetExtract
    • NetTake
    • NetDrop
    • NetFlatten
    • NetReplace
    • NetReplacePart
    • NetRename
    • NetDelete
    • NetInsert
    • NetAppend
    • NetPrepend
    • NetChain
    • NetGraph
  • Related Guides
    • Neural Network Operations
    • Neural Networks
  • Tech Notes
    • Neural Networks in the Wolfram Language
    • See Also
      • NetExtract
      • NetTake
      • NetDrop
      • NetFlatten
      • NetReplace
      • NetReplacePart
      • NetRename
      • NetDelete
      • NetInsert
      • NetAppend
      • NetPrepend
      • NetChain
      • NetGraph
    • Related Guides
      • Neural Network Operations
      • Neural Networks
    • Tech Notes
      • Neural Networks in the Wolfram Language

NetFlatten[net]

collapses nested NetChain and NetGraph objects within net.

NetFlatten[net,n]

collapses up to nesting level n.

Details and Options
Details and Options Details and Options
Examples  
Basic Examples  
Scope  
Properties & Relations  
See Also
Tech Notes
Related Guides
History
Cite this Page
BUILT-IN SYMBOL
  • See Also
    • NetExtract
    • NetTake
    • NetDrop
    • NetFlatten
    • NetReplace
    • NetReplacePart
    • NetRename
    • NetDelete
    • NetInsert
    • NetAppend
    • NetPrepend
    • NetChain
    • NetGraph
  • Related Guides
    • Neural Network Operations
    • Neural Networks
  • Tech Notes
    • Neural Networks in the Wolfram Language
    • See Also
      • NetExtract
      • NetTake
      • NetDrop
      • NetFlatten
      • NetReplace
      • NetReplacePart
      • NetRename
      • NetDelete
      • NetInsert
      • NetAppend
      • NetPrepend
      • NetChain
      • NetGraph
    • Related Guides
      • Neural Network Operations
      • Neural Networks
    • Tech Notes
      • Neural Networks in the Wolfram Language

NetFlatten

NetFlatten[net]

collapses nested NetChain and NetGraph objects within net.

NetFlatten[net,n]

collapses up to nesting level n.

Details and Options

  • NetFlatten[net] will flatten nested nets at any level, including within operators such as NetMapOperator and NetFoldOperator.

Examples

open all close all

Basic Examples  (2)

Flatten nested chains:

Flatten nested graphs:

Scope  (3)

Turn a NetChain with nested NetGraph into a unique NetGraph:

Collapse nested NetChain and NetGraph up to level 1:

Turn a flat NetGraph into a NetChain:

Properties & Relations  (3)

NetFlatten flattens nested nets, including within operators.

Construct an operator that contains nested chains:

The inner net of the NetMapOperator has been flattened:

NetFlatten yields a NetChain for a NetGraph that is fully flat:

NetFlatten yields a NetGraph for a NetChain that contains a nested NetGraph:

See Also

NetExtract  NetTake  NetDrop  NetFlatten  NetReplace  NetReplacePart  NetRename  NetDelete  NetInsert  NetAppend  NetPrepend  NetChain  NetGraph

Tech Notes

    ▪
  • Neural Networks in the Wolfram Language

Related Guides

    ▪
  • Neural Network Operations
  • ▪
  • Neural Networks

History

Introduced in 2018 (11.3) | Updated in 2019 (12.0)

Wolfram Research (2018), NetFlatten, Wolfram Language function, https://reference.wolfram.com/language/ref/NetFlatten.html (updated 2019).

Text

Wolfram Research (2018), NetFlatten, Wolfram Language function, https://reference.wolfram.com/language/ref/NetFlatten.html (updated 2019).

CMS

Wolfram Language. 2018. "NetFlatten." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2019. https://reference.wolfram.com/language/ref/NetFlatten.html.

APA

Wolfram Language. (2018). NetFlatten. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/NetFlatten.html

BibTeX

@misc{reference.wolfram_2025_netflatten, author="Wolfram Research", title="{NetFlatten}", year="2019", howpublished="\url{https://reference.wolfram.com/language/ref/NetFlatten.html}", note=[Accessed: 01-December-2025]}

BibLaTeX

@online{reference.wolfram_2025_netflatten, organization={Wolfram Research}, title={NetFlatten}, year={2019}, url={https://reference.wolfram.com/language/ref/NetFlatten.html}, note=[Accessed: 01-December-2025]}

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