如果您想保存最高准确度，那么您应该设置检查点 monitor='val_acc' 它会自动保存在最高准确度.最低损失不一定对应最高准确度.您还可以设置 verbose=1 以查看正在保存的模型以及原因.

If you would like to save the highest accuracy then you should set the checkpoint monitor='val_acc' it will automatically save on highest. Lowest loss might not necessarily correspond to highest accuracy. You can also set verbose=1 to see which model is being saved and why.