你好,感谢你提供的代码,我在跑VGG16,VGG19,AlexNet时都出现了结果不更新的情况,在ResNet50上结果正常,请问我该如何解决呢?
Epoch 1/10
12992/12992 [==============================] - 108s 8ms/step - loss: 1.7006 - acc: 0.8902 - val_loss: 1.6784 - val_acc: 0.8959

Epoch 00001: val_loss improved from inf to 1.67843, saving model to ./checkpoints/VGG19/VGG19.h5
Epoch 2/10
12992/12992 [==============================] - 100s 8ms/step - loss: 1.7046 - acc: 0.8942 - val_loss: 1.6784 - val_acc: 0.8959

Epoch 00002: val_loss did not improve from 1.67843
Epoch 3/10
12992/12992 [==============================] - 100s 8ms/step - loss: 1.7046 - acc: 0.8942 - val_loss: 1.6784 - val_acc: 0.8959

Epoch 00003: val_loss did not improve from 1.67843
Epoch 4/10
12992/12992 [==============================] - 100s 8ms/step - loss: 1.7046 - acc: 0.8942 - val_loss: 1.6784 - val_acc: 0.8959

Epoch 00004: val_loss did not improve from 1.67843
Epoch 5/10
12992/12992 [==============================] - 100s 8ms/step - loss: 1.7046 - acc: 0.8942 - val_loss: 1.6784 - val_acc: 0.8959

Epoch 00005: val_loss did not improve from 1.67843
Epoch 6/10
12992/12992 [==============================] - 100s 8ms/step - loss: 1.7046 - acc: 0.8942 - val_loss: 1.6784 - val_acc: 0.8959

Epoch 00006: val_loss did not improve from 1.67843

Epoch 00006: ReduceLROnPlateau reducing learning rate to 0.0004999999888241291.
Epoch 7/10
12992/12992 [==============================] - 98s 8ms/step - loss: 1.7046 - acc: 0.8942 - val_loss: 1.6784 - val_acc: 0.8959

Epoch 00007: val_loss did not improve from 1.67843
Epoch 8/10
12992/12992 [==============================] - 99s 8ms/step - loss: 1.7046 - acc: 0.8942 - val_loss: 1.6784 - val_acc: 0.8959

Epoch 00008: val_loss did not improve from 1.67843
Epoch 9/10
12992/12992 [==============================] - 100s 8ms/step - loss: 1.7046 - acc: 0.8942 - val_loss: 1.6784 - val_acc: 0.8959

Epoch 00009: val_loss did not improve from 1.67843
Epoch 10/10
12992/12992 [==============================] - 100s 8ms/step - loss: 1.7046 - acc: 0.8942 - val_loss: 1.6784 - val_acc: 0.8959

Epoch 00010: val_loss did not improve from 1.67843