Where can I find a good example of using tied weights in nested layers?

I could use some guidance on how to use tied weights for an autoencoder. The example provided in the documentation throws several errors within the dlnetwork object it uses. I would appreciate an-up-to-date example of weight tying or guidance on how to update the MathWorks example to function again.

[Matt J]

We need to see copy/pastes of the code as you have run it, and of the error messages that you have received.

[Joseph Conroy]

1. First, the `dlnetwork` object is improperly initialized:

"Error using dlnetwork

Invalid argument list. Function requires 1 more input(s).

Error in weightTyingAutoEncoderLayer (line 31)

net = dlnetwork;"

2. If you attempt to resolve this issue by setting `net = dlnetwork(encoderLayers);`, you encounter a different error.

"Error using dlnetwork/initialize

Invalid network.

Error in dlnetwork (line 210)

net = initialize(net, dlX{:});

Error in weightTyingAutoEncoderLayer (line 31)

net = dlnetwork(encoderLayers);

Caused by:

Example inputs: Incorrect number of example network inputs. 0 example network inputs provided but network has 1 inputs including 1 unconnected layer inputs.

Layer 'fc_1': Unconnected input. Each input must be connected to input data or to the output of another layer."

[Matt J]

Did you try my code below?

Answer 1

[Matt J]

The example at your link is for R2024a, but the version of Matlab you are running is only R2023b.

[Matt J]

Here are downgraded versions of the code files compatible with R2023b.