save a neural net in matlab 2017b, can't load it in 2018b

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Gidon Eshel
Gidon Eshel 2018-11-7
回答： Gidon Eshel 2018-11-8
Hi, the ANN in question is just a simple FF ANN stored in a file. But when I try loading it into matlab 2018b using
load('JacobianHessian.mat')
I get the following error message:
Warning: Class 'network' is an unknown object class or does not have a valid 'loadobj' method. Element(s) of this class in array 'Net' have been converted to structures.
Any workaround?
Thanks a lot, Gidon Eshel, gidon_eshel@fas.harvard.edu, (413) 717-2187
"
  2 个评论
Gidon Eshel
Gidon Eshel 2018-11-8
THANK YOU. THis is the relevant code segment that generates the ANNs:
net = feedforwardnet([6 5 4]);
net.divideFcn = '';
net.trainParam.showWindow = false;
net = train(net,X(k,:)',y(k)');
Thanks again, GIdon

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回答（5 个）

Steven Lord
Steven Lord 2018-11-8
Do you have Deep Learning Toolbox installed in your installation of release R2018b? Use the ver function to check. I suspect you don't.
  1 个评论
Gidon Eshel
Gidon Eshel 2018-11-8
编辑：Steven Lord 2018-11-8
>> ver
-----------------------------------------------------------------------------------------------------
MATLAB Version: 9.5.0.944444 (R2018b)
MATLAB License Number: ******
Operating System: Mac OS X Version: 10.13.6 Build: 17G65
Java Version: Java 1.8.0_152-b16 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode
-----------------------------------------------------------------------------------------------------
MATLAB Version 9.5 (R2018b)
Simulink Version 9.2 (R2018b)
Control System Toolbox Version 10.5 (R2018b)
DSP System Toolbox Version 9.7 (R2018b)
Global Optimization Toolbox Version 4.0 (R2018b)
Image Processing Toolbox Version 10.3 (R2018b)
Instrument Control Toolbox Version 3.14 (R2018b)
MATLAB Compiler Version 7.0 (R2018b)
Mapping Toolbox Version 4.7 (R2018b)
Optimization Toolbox Version 8.2 (R2018b)
Signal Processing Toolbox Version 8.1 (R2018b)
Simulink Control Design Version 5.2 (R2018b)
Statistics and Machine Learning Toolbox Version 11.4 (R2018b)
Symbolic Math Toolbox Version 8.2 (R2018b)
>>
[SL: Edited to remove license number]

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Gidon Eshel
Gidon Eshel 2018-11-8
so as you see, I do have statss and ML toolbox installed.
Thanks!
Gidon Eshel
Gidon Eshel 2018-11-8
but, I am warming to your idea. Indeed, I do NOT have Deep Learning installed. Am on it right now, will report back if this does it. Thanks!
Gidon Eshel
Gidon Eshel 2018-11-8
solved. Yes, the problem was overlooked the need to install both Stats&ML AND Deep Learning toolboxes. Sorry.
Thanks to all, best, Gidon
  1 个评论
Steven Lord
Steven Lord 2018-11-8
The feedforwardnet function is part of Deep Learning Toolbox, as you can see from the navigation frame on the left part of its documentation page. [In release R2017b it was part of Neural Network Toolbox; that toolbox was renamed in release R2018b.]
FYI according to the product requirements page Deep Learning Toolbox requires only MATLAB. It does recommend that you have six other products. [If you want to use GPU support in Deep Learning Toolbox, Parallel Computing Toolbox moves from being recommended to being required.]
Statistics and Machine Learning Toolbox is not one of the recommended products, so you don't need Statistics and Machine Learning Toolbox to use feedforwardnet. It may be required for another part of your application or project, though.

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Gidon Eshel
Gidon Eshel 2018-11-8
Thank you. My research and data analysis definitely require the stats box, but luckily there is no conflict, I can have my deep learning and my stats too!
All the best, thanks for the diligence, Gidon

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