Deep learning toolbox installed R2020b - does not work

anna song on 19 Jun 2019 posted the question:

Why does it show that the Deep learning toolbox has been installed but it does not show in MATLAB app

I am also having this problem. I have upgraded R2020a (with the same problem); downloaded and installed R2020b with the deeplearning toolbox. Still does not work. Tried uninstalling the toolbox, then reinstalling it.

Still no change - very frustrating.

I am following the steps from the deep learning On-Ramp Tutorial

Further, I can use net = alexnet on the web based version, but not on the desktop version. This is also a project/assessment problem so it is urgent.

I am following the steps from the deep learning On-Ramp Tutorial

[Image Analyst]

What do you mean that it shows it, but does not show it??? Explain the contradiction.

What does it say when you say

ver

on the command line? Delete your license number before posting it back here.

[Walter Roberson]

alexnet has to be specifically installed through the Add-On explorer.

[Paul Buckman]

Screen shot of ver attached.

1) I can use Matlab R2020b in other courses Robotics, calculus, and Digital Imaging.

Ver shows the toolboxes used.

2) the problem shows when I tried to run the command net = alexnet

I get the message in "Screenshot 2020-11-04 120126.jpg" attached

Thank you for your assistance here.

Answer 1

[Steven Lord]

2) the problem shows when I tried to run the command net = alexnet

I get the message in "Screenshot 2020-11-04 120126.jpg" attached

What happened when you clicked on the "Add-On Explorer" link in the error message to install the Deep Learning Toolbox Model for AlexNet Network support package?

[Paul Buckman]

Thanks to Walter and Steven

Problem solved:- I was not aware that you also had an explicit install for alexnet (from Walter). It now works well.

Sincere thanks; Paul

Answer 2

[sana khan]

hi . i have a problems to install deep learning tool box from adds on explorar in matlab 2020 a version. i got this window. please guide me that what to do?

[Walter Roberson]

As you do not appear to be under software maintenance, then you will need to use the MATLAB Installer for your release to install the toolbox. This assumes that you already have a license for the toolbox.

If you do not already have a license for the toolbox for a previous release, you will need to talk to Mathworks Sales to purchase a license for your release.

I do not know what the current policies are. Historically, the policy at least used to be that if you did not have software maintenance that you could purchase licenses for software that was no more than 2 years old. As R2020a is now more than 2 years old, it is possible that Mathworks might not permit you to purchase a toolbox license for that release. In such a situation, the Mathworks policy would be that you need to catch up on the software mainteance payments (policy used to be that you could pay up to 4 past years), or purchase a new current MATLAB license together with the toolboxes you needed.

If you have a toolbox license for any release newer than the version you wish to use the toolbox with, then the newer licence entitles you to use any previous release of the toolbox. So if Mathworks were to tell you now that you need to purchase R2023a + the toolbox against R2023a, that would not mean that you had to use R2023a: you could continue to use R2020a (such as for compatibility reasons.)