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Hello guys I am very confused as I am building a deep learning image classifier from raw python code ,so my question is that:-is backpropagation used in validation set to get the model more accuracy in validation set (I have only one model )

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  • $\begingroup$ Are you asking if the validation set is also used for training of neural networks? $\endgroup$ – Jan Kukacka May 2 at 15:59
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Nope. Back propagation occurs only during training.

During validation, it uses the learnt parameters to predict and evaluate on validation set.

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