tensorflow text로 간편하게 시작하는 NSMC 분류
https://blog.ukjae.io/posts/tensorflow-text-and-ragged-tensor/
$ python train_model.py
...
Model: "sequential"
_________________________________________________________________
Layer (type) Output Shape Param #
=================================================================
embedding (Embedding) (None, None, 256) 1280000
_________________________________________________________________
lstm (LSTM) (None, 256) 525312
_________________________________________________________________
dense (Dense) (None, 256) 65792
_________________________________________________________________
dense_1 (Dense) (None, 2) 514
=================================================================
Total params: 1,871,618
Trainable params: 1,871,618
Non-trainable params: 0
_________________________________________________________________
...
...
2244/2244 [==============================] - 161s 71ms/step - loss: 0.4242 - acc: 0.8019 - val_loss: 0.3179 - val_acc: 0.8612
Epoch 2/3
2244/2244 [==============================] - 160s 71ms/step - loss: 0.3174 - acc: 0.8646 - val_loss: 0.3001 - val_acc: 0.8737
Epoch 3/3
2244/2244 [==============================] - 160s 71ms/step - loss: 0.2935 - acc: 0.8775 - val_loss: 0.3034 - val_acc: 0.8759
196/196 [==============================] - 5s 24ms/step - loss: 0.3290 - acc: 0.8625