The problem validation_split in the image_dataset_from_directory settings

Course Q&A Deep Learning Specialization Convolutional Neural Networks
1

What does it mean to set validation_split=0.2 and set subset=‘training’? still need to take 20% of the training set as the verification set?

thanks

2

The 2 calls to image_dataset_from_directory are responsible for getting the train and validation splits of the images. Training set contains 80% of the images and validation set contains the remaining 20% of the images. To ensure that there is no overlap between training and validation sets, the same seed is provided to both calls.

3

I got it.thanks~~~~~~~~~~~~~~~~~~