### DEFINE CALLBACKS HERE

from tensorflow.keras.callbacks import ModelCheckpoint, ReduceLROnPlateau, EarlyStopping

def bestFold(name):
    return ModelCheckpoint(name, monitor='val_acc', save_best_only=True, verbose=1)

lr_reducer = ReduceLROnPlateau(monitor = 'val_loss', factor = 0.3, patience = 5, verbose = 1, cooldown = 2, min_lr = 1e-6)
early_stop = EarlyStopping(monitor='val_loss', min_delta=0.001, patience=25, verbose=1, mode='auto', baseline=None, restore_best_weights=True)