Error when trying to follow Deep learning example

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dipanath12 - 2021-04-13T10:37:33+00:00
Question: Error when trying to follow Deep learning example

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?

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    • Expert Answer

    Profile picture of John Michell John Michell answered . 2025-11-20

    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


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