Error when trying to follow Deep learning example

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Maciej Staszak
Maciej Staszak 2021-3-17
编辑： Adam Danz 2022-11-28
Dears,
I strongly suspect that my question is rather fundamental and basic and less related to Deep learning but because I wanted to highlight the context hence the title of this thread.
Well, this is how I am trying to execute the "Word-By-Word Text Generation Using Deep Learning" example which uses text from Alice in Wonderland.
When calling:
ds = documentGenerationDatastore(documents);
I get the error message:
'documentGenerationDatastore' is used in Word-By-Word Text Generation Using Deep Learning.
The above message looks like an affirmative sentence, which of course I can agree with but it is a bit laconic.
Does anyone perhaps know what is causing this error?
Have nice evening to everyone :)

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采纳的回答

Adam Danz
Adam Danz 2021-3-17
编辑：Adam Danz 2022-11-28
Updated answer (11/28/22)
The documentation page for the Word-By-Word Text Generation Using Deep Learning example has been updated to instruct users to open the example in a Live Script to access the documentGenerationDatastore.m file.
Copy the command using this button on the doc page, then execute the command from MATLAB's command window.
Original answer
I agree that the error message isn't helpful.
Based on the documentation, documentGenerationDatastore.m, should be stored on my system in,
C:\Program Files\MATLAB\R2021a\examples\nnet\main\
or on any system,
fullfile(matlabroot,'examples','nnet','main','documentGenerationDatastore.m')
and while I have the Deep Learning Toolbox and the nnet>main folder, the file is missing (r2021a). The documentation also shows how to create your own custom mini-batch datastore in Develop Custom Mini-Batch Datastore but that's not helpful to understand what should be in documentGenerationDatastore.m.
I'd contact Tech Support using: Contact Us - MATLAB & Simulink
And let us know what the resolution is.
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mark palmer
mark palmer 2022-11-23
Did you ever figure out how to solve this with the Alice in Wonderland text?
Adam Danz
Adam Danz 2022-11-28
@mark palmer see my updated answer and let us know if you have any further problems.

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