This works:
filepath = self.log_dir + os.sep + "checkpoint" self.callbacks.append( ModelCheckpoint( filepath, monitor="val_loss", mode="min", save_best_only=True, save_weights_only=True, ) )And this doesn’t:
filepath = self.log_dir + os.sep + "checkpoint.hdf5" self.callbacks.append( ModelCheckpoint( filepath, monitor="val_loss", mode="min", save_best_only=True, save_weights_only=True, ) )