我有一个问题tf.callbacks.ModelChekpoint。正如您在我的日志文件中看到的，警告总是在val_acc计算的最后一次迭代之前出现。因此，Modelcheckpoint永远找不到val_acc
Epoch 1/30
1/8 [==>...........................] - ETA: 19s - loss: 1.4174 - accuracy: 0.3000
2/8 [======>.......................] - ETA: 8s - loss: 1.3363 - accuracy: 0.3500
3/8 [==========>...................] - ETA: 4s - loss: 1.3994 - accuracy: 0.2667
4/8 [==============>...............] - ETA: 3s - loss: 1.3527 - accuracy: 0.3250
6/8 [=====================>........] - ETA: 1s - loss: 1.3042 - accuracy: 0.3333
WARNING:tensorflow:Can save best model only with val_acc available, skipping.
8/8 [==============================] - 4s 482ms/step - …