is an option to specify the number, names or shapes of input ports for some neural net layers.
InputPorts
is an option to specify the number, names or shapes of input ports for some neural net layers.
Details
- InputPorts is typically used in layers that support an arbitrary number of input ports, such as ThreadingLayer , CatenateLayer , DotLayer and PlaceholderLayer .
- Typical settings for InputPorts include:
-
n n ports with default names and unspecified shapes{"name1","name2",…} explicit port names with unspecified shapes{shape1,shape2,…} default port names with specified shapes or encoders<|"name1"shape1,…|> explicit port names with specified shapes or encoders
- Shape specifications for each port include:
-
"Real" a single real number"Integer" a single integern a vector of length n{n1,n2,…} an array of dimensions n1×n2×…"Varying" a vector whose length is variable{"Varying",n2,n3,…} an array whose first dimension is variable and remaining dimensions are n2×n3×…
Examples
open all close allBasic Examples (1)
By default, multi-input layers such as ThreadingLayer have an undefined number of input ports:
Use InputPorts to create a ThreadingLayer with three ports having default names and unspecified shapes:
Scope (3)
Create a CatenateLayer with two inputs having explicit names and unspecified shapes:
Create a PlaceholderLayer with four inputs having default names and specified shapes:
Create a DotLayer with two inputs having explicit names and specified shapes:
Related Guides
History
Text
Wolfram Research (2020), InputPorts, Wolfram Language function, https://reference.wolfram.com/language/ref/InputPorts.html.
CMS
Wolfram Language. 2020. "InputPorts." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/InputPorts.html.
APA
Wolfram Language. (2020). InputPorts. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/InputPorts.html
BibTeX
@misc{reference.wolfram_2025_inputports, author="Wolfram Research", title="{InputPorts}", year="2020", howpublished="\url{https://reference.wolfram.com/language/ref/InputPorts.html}", note=[Accessed: 08-January-2026]}
BibLaTeX
@online{reference.wolfram_2025_inputports, organization={Wolfram Research}, title={InputPorts}, year={2020}, url={https://reference.wolfram.com/language/ref/InputPorts.html}, note=[Accessed: 08-January-2026]}