Load pretrained neural networks

Hello, I am trying to load the pretrained neural networks via add-on explorer, and I always get the same error, below, for either "install" or "download", and every network.

""

Install folder error

This folder name is invalid. Folder names can contain alphanumeric characters and '-', '_', '.', or '/' only. The destination folder cannot be named "private".

""

Can someone please advise ?

[Nagasai Bharat]

Hi,

Can you let me know the MATLAB version, OS and the Add-on pac you are using which is causing this issue.

[Kody Law]

R2020b originally, but just updated to R2021a and I have the same issue.

MacOS Big Sur, v11.3

vgg16, vgg19, alexnet, googlenet... literally any one, but please let me know if there is one specifically you'd like me to try.

Answer 1

[Kody Law]

The path can be changed as follows.

Use the following command, in the MATLAB command window, to see the path:

matlabshared.supportpkg.getSupportPackageRoot

This path cannot have any of the offending characters in folder/filenames (e.g. in my case, Dropbox hijacked my Documents folder and used spaces and '()' in the name of that folder). This does not include the '/' symbols in between folders.

Change the folder/filenames as necessary with

matlabshared.supportpkg.setSupportPackageRoot('NEWPATH')

And off you go. Thanks so much to Adrian at HQ for providing clear and useful support by email.

Cheers!

Kody

Answer 2

[Nagasai Bharat]

Hi,

As the alternative you could refer the following documentation link to import pretained networks into MATLAB. This would help you with your task using another approach.

Pretrained Deep Neural Networks - MATLAB & Simulink (mathworks.com)

[Kody Law]

Thank you for the link. I just need the pretrained network, from which I plan to extract high-level features, say at level 3. The only one which is installed in the deep network designer is squeezenet, and the others direct me again to the add-on manager to install. Is it possible to add them all at install, if I reinstall ? If so, what should I select specifically ?

Best, Kody

[Nagasai Bharat]

Hi,

You could once go over the discussion from the link below.

https://www.mathworks.com/matlabcentral/answers/168450-why-am-i-getting-an-error-stating-this-folder-name-is-invalid-the-destination-cannot-be-named-priv

[Kody Law]

Sorry I responded to this below.

If you can just tell me where

Deep Learning Toolbox Model for VGG-16 Network

Is trying to download to, then maybe I can use the tmpdir trick there. This is pretty weak support though, to be honest. Why doesn’t it work? And moreover, why isn’t the error message helpful at all:

This folder name is invalid. Folder names can contain alphanumeric characters and '-', '_', '.', or '/' only. The destination folder cannot be named "private".

How about a path? A workaround? What folder? What name?

Thanks,

Kody

Answer 3

[Kody Law]

Thanks, Nasgasi, I've seen this and it is not useful for me. Please respond below, if you can. Thanks so much, Kody

1) Create a folder that will be used temporarily during installation

Created.

2) Open Terminal application

Opened.

3) Drag and drop install script into Terminal from your MATLAB directory that contains installation files to be installed

Can you please clarify this ? Where is this install script ?

4) Add -tmpdir flag pointing to your newly created temporary folder in the following manner:

/Users/YourUsername/Downloads/matlab_R2014a_maci64/install -tmpdir /Users/YourUsername/Desktop/temporaryfolder/

(base) Kodys-MacBook-Pro:~ kody$ /Users/kody/Downloads/matlab_R2021a_maci64-2/install -tmpdir /Users/kody/Desktop/temporaryfolder/

-bash: /Users/kody/Downloads/matlab_R2021a_maci64-2/install: No such file or directory

Not sure what’s going on here.

Are you suggesting if I reinstall after successfully finding the appropriate directory, then I will be able to use the add-on manager, or should I be adding it on from the beginning ? I just reinstalled yesterday, and these packages are not available at that stage from my recollection.