I’m writing to mention that I solved the general problem of running an LSTM workflow. The steps I followed were the following:
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Install community-verified Anaconda environments for Keras. KNIME and Python — Setting up Deep Learning Environments for Keras and TensorFlow | by Markus Lauber | Low Code for Data Science | Medium
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Copy the commands from the website and create .yaml files.
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Import the files into Anaconda.
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Update KNIME.
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Configure KNIME preferences in Python and Python Deep Learning to read the created environments.
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Run another alternative LSTM workflow. I used this Energy Demand Prediction with LSTM - Training – KNIME Community Hub and it didn’t give me an error.
In general, that is the solution. However, the initial flow never ran for me, so I think the flow configuration has a problem.
Thank you @mlauber71 !
Carlos