fix the bug in data.py

data_utils/data.py

@@ -330,8 +330,8 @@ class DataGenerator(object):
                 axis=0)
             masks.append(mask)
         padded_audios = np.array(padded_audios).astype('float32')
-        texts = np.expand_dims(np.array(texts).astype('int32'), axis=-1)
         if self._is_training:
+            texts = np.expand_dims(np.array(texts).astype('int32'), axis=-1)
             texts = fluid.create_lod_tensor(
                 texts, recursive_seq_lens=[text_lens], place=self._place)
         audio_lens = np.array(audio_lens).astype('int64').reshape([-1, 1])

deploy/demo_server.py

@@ -48,7 +48,7 @@ add_arg('vocab_path',       str,
         'data/librispeech/eng_vocab.txt',
         "Filepath of vocabulary.")
 add_arg('model_path',       str,
-        './checkpoints/libri/params.latest.tar.gz',
+        './checkpoints/libri/step_final',
         "If None, the training starts from scratch, "
         "otherwise, it resumes from the pre-trained model.")
 add_arg('lang_model_path',  str,