title: how to split EEG signals data into training and testing?
body: <p>I have Psg signals as a dataset of sleeping records in edf format,  my CNN model consists on selecting an epoch of 30 s from each record and use a 1d convolutional on it, my question is how to split my dataset into  training, validation and testing if we know that my data are not CSV files but edf. thank you </p>