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While training (my 3d_conv NN), the accuracy of the train set is high - 65% (don't mind the validation accuracy yet):

enter image description here

But - when I predict the labels of the TRAIN set on the trained model, I get a terrible accuracy (instead of the anticipated over-fitted result of 65%):

enter image description here

How is that possible? Why would it happen?

Another question would be on the validation set - why doesn't it improve at all?

The data is split randomly between the train and validation set using sklearn's train_test_split() with the "stratify" option.

Any help would be much appreciated.

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    $\begingroup$ Your model only predict no movement... there is a problem somewhere in your training or inference phase. $\endgroup$
    – lcrmorin
    Sep 21 at 16:36

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