NetArray
Details
- NetArray is typically used to share arrays in NetChain /NetGraph or to define learnable parameters in FunctionLayer […].
- All net arrays sharing the same name in a net are treated as the same underlying array by NetInitialize , NetTrain , etc.
- The properties that can be specified are:
-
"Array" initial values or inialization method for the array"Dimensions" dimensions of the array"Name" name of the array, so that it can be shared
- NetArray [] automatically gives a name (UUID) to the array and is equivalent to NetArray [Automatic ].
- NetInsertSharedArrays [layer] will return a new layer in which all its arrays have been replaced with named net arrays.
Examples
Basic Examples (3)
Create a layer containing a shared array:
Create a chain that contains a shared array, used in two layers:
Initialize all arrays:
The weights from the two linear layers are the same (and will remain the same when training with NetTrain ):
Extract all the shared arrays of a net:
Define a FunctionLayer that adds a list of learnable values to a list, initialized with arbitrary values:
Evaluate the layer on an input list:
The original NetArray corresponds to a NetArrayLayer in the equivalent NetGraph :
Tech Notes
Related Guides
History
Text
Wolfram Research (2020), NetArray, Wolfram Language function, https://reference.wolfram.com/language/ref/NetArray.html.
CMS
Wolfram Language. 2020. "NetArray." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/NetArray.html.
APA
Wolfram Language. (2020). NetArray. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/NetArray.html
BibTeX
@misc{reference.wolfram_2025_netarray, author="Wolfram Research", title="{NetArray}", year="2020", howpublished="\url{https://reference.wolfram.com/language/ref/NetArray.html}", note=[Accessed: 09-January-2026]}
BibLaTeX
@online{reference.wolfram_2025_netarray, organization={Wolfram Research}, title={NetArray}, year={2020}, url={https://reference.wolfram.com/language/ref/NetArray.html}, note=[Accessed: 09-January-2026]}