Internal

PiperOrigin-RevId: 554595324

mediapipe/model_maker/python/core/utils/BUILD

@@ -19,6 +19,13 @@ licenses(["notice"])
 
 package(default_visibility = ["//mediapipe:__subpackages__"])
 
+filegroup(
+    name = "testdata",
+    srcs = glob([
+        "testdata/**",
+    ]),
+)
+
 py_library(
     name = "test_util",
     testonly = 1,
@@ -56,11 +63,26 @@ py_library(
 py_test(
     name = "file_util_test",
     srcs = ["file_util_test.py"],
-    data = ["//mediapipe/model_maker/python/core/utils/testdata"],
+    data = [":testdata"],
     tags = ["requires-net:external"],
     deps = [":file_util"],
 )
 
+py_library(
+    name = "hub_loader",
+    srcs = ["hub_loader.py"],
+)
+
+py_test(
+    name = "hub_loader_test",
+    srcs = ["hub_loader_test.py"],
+    data = [":testdata"],
+    deps = [
+        ":hub_loader",
+        "//mediapipe/tasks/python/test:test_utils",
+    ],
+)
+
 py_library(
     name = "loss_functions",
     srcs = ["loss_functions.py"],

mediapipe/model_maker/python/core/utils/hub_loader.py

@@ -0,0 +1,97 @@
+# Copyright 2023 The MediaPipe Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Handles both V1 and V2 modules."""
+
+import tensorflow_hub as hub
+
+
+class HubKerasLayerV1V2(hub.KerasLayer):
+  """Class to loads TF v1 and TF v2 hub modules that could be fine-tuned.
+
+  Since TF v1 modules couldn't be retrained in hub.KerasLayer. This class
+  provides a workaround for retraining the whole tf1 model in tf2. In
+  particular, it extract self._func._self_unconditional_checkpoint_dependencies
+  into trainable variable in tf1.
+
+  Doesn't update moving-mean/moving-variance for BatchNormalization during
+  fine-tuning.
+  """
+
+  def _setup_layer(self, trainable=False, **kwargs):
+    if self._is_hub_module_v1:
+      self._setup_layer_v1(trainable, **kwargs)
+    else:
+      # call _setup_layer from the base class for v2.
+      super(HubKerasLayerV1V2, self)._setup_layer(trainable, **kwargs)
+
+  def _check_trainability(self):
+    if self._is_hub_module_v1:
+      self._check_trainability_v1()
+    else:
+      # call _check_trainability from the base class for v2.
+      super(HubKerasLayerV1V2, self)._check_trainability()
+
+  def _setup_layer_v1(self, trainable=False, **kwargs):
+    """Constructs keras layer with relevant weights and losses."""
+    # Initialize an empty layer, then add_weight() etc. as needed.
+    super(hub.KerasLayer, self).__init__(trainable=trainable, **kwargs)
+
+    if not self._is_hub_module_v1:
+      raise ValueError(
+          'Only supports to set up v1 hub module in this function.'
+      )
+
+    # v2 trainable_variable:
+    if hasattr(self._func, 'trainable_variables'):
+      for v in self._func.trainable_variables:
+        self._add_existing_weight(v, trainable=True)
+      trainable_variables = {id(v) for v in self._func.trainable_variables}
+    else:
+      trainable_variables = set()
+
+    if not hasattr(self._func, '_self_unconditional_checkpoint_dependencies'):
+      raise ValueError(
+          "_func doesn't contains attribute "
+          '_self_unconditional_checkpoint_dependencies.'
+      )
+    dependencies = self._func._self_unconditional_checkpoint_dependencies  # pylint: disable=protected-access
+
+    # Adds trainable variables.
+    for dep in dependencies:
+      if dep.name == 'variables':
+        for v in dep.ref:
+          if id(v) not in trainable_variables:
+            self._add_existing_weight(v, trainable=True)
+            trainable_variables.add(id(v))
+
+    # Adds non-trainable variables.
+    if hasattr(self._func, 'variables'):
+      for v in self._func.variables:
+        if id(v) not in trainable_variables:
+          self._add_existing_weight(v, trainable=False)
+
+    # Forward the callable's regularization losses (if any).
+    if hasattr(self._func, 'regularization_losses'):
+      for l in self._func.regularization_losses:
+        if not callable(l):
+          raise ValueError(
+              'hub.KerasLayer(obj) expects obj.regularization_losses to be an '
+              'iterable of callables, each returning a scalar loss term.'
+          )
+        self.add_loss(self._call_loss_if_trainable(l))  # Supports callables.
+
+  def _check_trainability_v1(self):
+    """Ignores trainability checks for V1."""
+    if self._is_hub_module_v1:
+      return  # Nothing to do.

mediapipe/model_maker/python/core/utils/hub_loader_test.py

@@ -0,0 +1,59 @@
+# Copyright 2023 The MediaPipe Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from absl.testing import parameterized
+import tensorflow as tf
+
+from mediapipe.model_maker.python.core.utils import hub_loader
+from mediapipe.tasks.python.test import test_utils
+
+
+class HubKerasLayerV1V2Test(tf.test.TestCase, parameterized.TestCase):
+
+  @parameterized.parameters(
+      ("hub_module_v1_mini", True),
+      ("saved_model_v2_mini", True),
+      ("hub_module_v1_mini", False),
+      ("saved_model_v2_mini", False),
+  )
+  def test_load_with_defaults(self, module_name, trainable):
+    inputs, expected_outputs = 10.0, 11.0  # Test modules perform increment op.
+    path = test_utils.get_test_data_path(module_name)
+    layer = hub_loader.HubKerasLayerV1V2(path, trainable=trainable)
+    output = layer(inputs)
+    self.assertEqual(output, expected_outputs)
+
+  def test_trainable_variable(self):
+    path = test_utils.get_test_data_path("hub_module_v1_mini_train")
+    layer = hub_loader.HubKerasLayerV1V2(path, trainable=True)
+    # Checks trainable variables.
+    self.assertLen(layer.trainable_variables, 2)
+    self.assertEqual(layer.trainable_variables[0].name, "a:0")
+    self.assertEqual(layer.trainable_variables[1].name, "b:0")
+    self.assertEqual(layer.variables, layer.trainable_variables)
+    # Checks non-trainable variables.
+    self.assertEmpty(layer.non_trainable_variables)
+
+    layer = hub_loader.HubKerasLayerV1V2(path, trainable=False)
+    # Checks trainable variables.
+    self.assertEmpty(layer.trainable_variables)
+    # Checks non-trainable variables.
+    self.assertLen(layer.non_trainable_variables, 2)
+    self.assertEqual(layer.non_trainable_variables[0].name, "a:0")
+    self.assertEqual(layer.non_trainable_variables[1].name, "b:0")
+    self.assertEqual(layer.variables, layer.non_trainable_variables)
+
+
+if __name__ == "__main__":
+  tf.test.main()

mediapipe/model_maker/python/core/utils/testdata/BUILD

@@ -1,23 +0,0 @@
-# Copyright 2022 The MediaPipe Authors.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-package(
-    default_visibility = ["//mediapipe/model_maker/python/core/utils:__subpackages__"],
-    licenses = ["notice"],  # Apache 2.0
-)
-
-filegroup(
-    name = "testdata",
-    srcs = ["test.txt"],
-)

mediapipe/model_maker/python/core/utils/testdata/hub_module_v1_mini/tfhub_module.pb

@@ -0,0 +1 @@
+

mediapipe/model_maker/python/core/utils/testdata/hub_module_v1_mini_train/tfhub_module.pb

@@ -0,0 +1 @@
+

mediapipe/model_maker/python/core/utils/testdata/hub_module_v1_mini_train/variables/variables.data-00000-of-00001

@@ -0,0 +1,2 @@
+<EFBFBD>釮粮ﾂｿ
+

mediapipe/model_maker/python/text/core/bert_model_spec.py

@@ -14,7 +14,7 @@
 """Specification for a BERT model."""
 
 import dataclasses
-from typing import Dict
+from typing import Dict, Union
 
 from mediapipe.model_maker.python.core import hyperparameters as hp
 from mediapipe.model_maker.python.core.utils import file_util
@@ -35,7 +35,9 @@ class BertModelSpec:
   Transformers for Language Understanding) for more details.
 
     Attributes:
-      downloaded_files: A DownloadedFiles object of the model files
+      files: Either a TFHub url string which can be passed directly to
+        hub.KerasLayer or a DownloadedFiles object of the model files.
+      is_tf2: If True, the checkpoint is TF2 format. Else use TF1 format.
       hparams: Hyperparameters used for training.
       model_options: Configurable options for a BERT model.
       do_lower_case: boolean, whether to lower case the input text. Should be
@@ -45,7 +47,8 @@ class BertModelSpec:
       name: The name of the object.
   """
 
-  downloaded_files: file_util.DownloadedFiles
+  files: Union[str, file_util.DownloadedFiles]
+  is_tf2: bool = True
   hparams: hp.BaseHParams = dataclasses.field(
       default_factory=lambda: hp.BaseHParams(
           epochs=3,
@@ -61,3 +64,11 @@ class BertModelSpec:
   tflite_input_name: Dict[str, str] = dataclasses.field(
       default_factory=lambda: _DEFAULT_TFLITE_INPUT_NAME)
   name: str = 'Bert'
+
+  def get_path(self) -> str:
+    if isinstance(self.files, file_util.DownloadedFiles):
+      return self.files.get_path()
+    elif isinstance(self.files, str):
+      return self.files
+    else:
+      raise ValueError(f'files has unsupported type: {type(self.files)}')

mediapipe/model_maker/python/text/text_classifier/BUILD

@@ -131,6 +131,7 @@ py_library(
         ":text_classifier_options",
         "//mediapipe/model_maker/python/core/data:dataset",
         "//mediapipe/model_maker/python/core/tasks:classifier",
+        "//mediapipe/model_maker/python/core/utils:hub_loader",
         "//mediapipe/model_maker/python/core/utils:loss_functions",
         "//mediapipe/model_maker/python/core/utils:metrics",
         "//mediapipe/model_maker/python/core/utils:model_util",

mediapipe/model_maker/python/text/text_classifier/model_spec.py

@@ -23,16 +23,8 @@ from mediapipe.model_maker.python.text.text_classifier import hyperparameters as
 from mediapipe.model_maker.python.text.text_classifier import model_options as mo
 
 
-MOBILEBERT_TINY_FILES = file_util.DownloadedFiles(
-    'text_classifier/mobilebert_tiny',
-    'https://storage.googleapis.com/mediapipe-assets/mobilebert_tiny.tar.gz',
-    is_folder=True,
-)
-
-EXBERT_FILES = file_util.DownloadedFiles(
-    'text_classifier/exbert',
-    'https://storage.googleapis.com/mediapipe-assets/exbert.tar.gz',
-    is_folder=True,
+MOBILEBERT_FILES = (
+    'https://tfhub.dev/google/mobilebert/uncased_L-24_H-128_B-512_A-4_F-4_OPT/1'
 )
 
 
@@ -71,23 +63,14 @@ class BertClassifierSpec(bert_model_spec.BertModelSpec):
 
   hparams: hp.BertHParams = dataclasses.field(default_factory=hp.BertHParams)
 
-
 mobilebert_classifier_spec = functools.partial(
     BertClassifierSpec,
-    downloaded_files=MOBILEBERT_TINY_FILES,
+    files=MOBILEBERT_FILES,
     hparams=hp.BertHParams(
         epochs=3, batch_size=48, learning_rate=3e-5, distribution_strategy='off'
     ),
-    name='MobileBert',
-)
-
-exbert_classifier_spec = functools.partial(
-    BertClassifierSpec,
-    downloaded_files=EXBERT_FILES,
-    hparams=hp.BertHParams(
-        epochs=3, batch_size=48, learning_rate=3e-5, distribution_strategy='off'
-    ),
-    name='ExBert',
+    name='MobileBERT',
+    is_tf2=False,
 )
 
 
@@ -96,4 +79,3 @@ class SupportedModels(enum.Enum):
   """Predefined text classifier model specs supported by Model Maker."""
   AVERAGE_WORD_EMBEDDING_CLASSIFIER = average_word_embedding_classifier_spec
   MOBILEBERT_CLASSIFIER = mobilebert_classifier_spec
-  EXBERT_CLASSIFIER = exbert_classifier_spec

mediapipe/model_maker/python/text/text_classifier/model_spec_test.py

@@ -42,8 +42,8 @@ class ModelSpecTest(tf.test.TestCase):
   def test_predefined_bert_spec(self):
     model_spec_obj = ms.SupportedModels.MOBILEBERT_CLASSIFIER.value()
     self.assertIsInstance(model_spec_obj, ms.BertClassifierSpec)
-    self.assertEqual(model_spec_obj.name, 'MobileBert')
-    self.assertTrue(os.path.exists(model_spec_obj.downloaded_files.get_path()))
+    self.assertEqual(model_spec_obj.name, 'MobileBERT')
+    self.assertTrue(model_spec_obj.files)
     self.assertTrue(model_spec_obj.do_lower_case)
     self.assertEqual(
         model_spec_obj.tflite_input_name,

mediapipe/model_maker/python/text/text_classifier/preprocessor_test.py

@@ -87,11 +87,11 @@ class PreprocessorTest(tf.test.TestCase):
     csv_file = self._get_csv_file()
     dataset = text_classifier_ds.Dataset.from_csv(
         filename=csv_file, csv_params=self.CSV_PARAMS_)
-    bert_spec = model_spec.SupportedModels.EXBERT_CLASSIFIER.value()
+    bert_spec = model_spec.SupportedModels.MOBILEBERT_CLASSIFIER.value()
     bert_preprocessor = preprocessor.BertClassifierPreprocessor(
         seq_len=5,
         do_lower_case=bert_spec.do_lower_case,
-        uri=bert_spec.downloaded_files.get_path(),
+        uri=bert_spec.get_path(),
         model_name=bert_spec.name,
     )
     preprocessed_dataset = bert_preprocessor.preprocess(dataset)
@@ -121,11 +121,11 @@ class PreprocessorTest(tf.test.TestCase):
         csv_params=self.CSV_PARAMS_,
         cache_dir=self.get_temp_dir(),
     )
-    bert_spec = model_spec.SupportedModels.EXBERT_CLASSIFIER.value()
+    bert_spec = model_spec.SupportedModels.MOBILEBERT_CLASSIFIER.value()
     bert_preprocessor = preprocessor.BertClassifierPreprocessor(
         seq_len=5,
         do_lower_case=bert_spec.do_lower_case,
-        uri=bert_spec.downloaded_files.get_path(),
+        uri=bert_spec.get_path(),
         model_name=bert_spec.name,
     )
     ds_cache_files = dataset.tfrecord_cache_files
@@ -153,7 +153,7 @@ class PreprocessorTest(tf.test.TestCase):
     bert_preprocessor = preprocessor.BertClassifierPreprocessor(
         seq_len=seq_len,
         do_lower_case=do_lower_case,
-        uri=bert_spec.downloaded_files.get_path(),
+        uri=bert_spec.get_path(),
         model_name=bert_spec.name,
     )
     new_cf = bert_preprocessor._get_tfrecord_cache_files(cf)
@@ -167,10 +167,6 @@ class PreprocessorTest(tf.test.TestCase):
         cache_dir=self.get_temp_dir(),
         num_shards=1,
     )
-    exbert_spec = model_spec.SupportedModels.EXBERT_CLASSIFIER.value()
-    all_cf_prefixes.add(self._get_new_prefix(cf, exbert_spec, 5, True))
-    all_cf_prefixes.add(self._get_new_prefix(cf, exbert_spec, 10, True))
-    all_cf_prefixes.add(self._get_new_prefix(cf, exbert_spec, 5, False))
     mobilebert_spec = model_spec.SupportedModels.MOBILEBERT_CLASSIFIER.value()
     all_cf_prefixes.add(self._get_new_prefix(cf, mobilebert_spec, 5, True))
     all_cf_prefixes.add(self._get_new_prefix(cf, mobilebert_spec, 10, True))
@@ -180,10 +176,10 @@ class PreprocessorTest(tf.test.TestCase):
         cache_dir=self.get_temp_dir(),
         num_shards=1,
     )
-    all_cf_prefixes.add(self._get_new_prefix(new_cf, exbert_spec, 5, True))
+    all_cf_prefixes.add(self._get_new_prefix(new_cf, mobilebert_spec, 5, True))
 
-    # Each item of all_cf_prefixes should be unique, so 7 total.
-    self.assertLen(all_cf_prefixes, 7)
+    # Each item of all_cf_prefixes should be unique.
+    self.assertLen(all_cf_prefixes, 4)
 
 
 if __name__ == '__main__':

mediapipe/model_maker/python/text/text_classifier/text_classifier.py

@@ -24,6 +24,7 @@ import tensorflow_hub as hub
 
 from mediapipe.model_maker.python.core.data import dataset as ds
 from mediapipe.model_maker.python.core.tasks import classifier
+from mediapipe.model_maker.python.core.utils import hub_loader
 from mediapipe.model_maker.python.core.utils import loss_functions
 from mediapipe.model_maker.python.core.utils import metrics
 from mediapipe.model_maker.python.core.utils import model_util
@@ -52,18 +53,21 @@ def _validate(options: text_classifier_options.TextClassifierOptions):
   if options.model_options is None:
     return
 
-  if (isinstance(options.model_options, mo.AverageWordEmbeddingModelOptions) and
-      (options.supported_model !=
-       ms.SupportedModels.AVERAGE_WORD_EMBEDDING_CLASSIFIER)):
-    raise ValueError("Expected AVERAGE_WORD_EMBEDDING_CLASSIFIER,"
-                     f" got {options.supported_model}")
-  if isinstance(options.model_options, mo.BertModelOptions) and (
-      options.supported_model != ms.SupportedModels.MOBILEBERT_CLASSIFIER
-      and options.supported_model != ms.SupportedModels.EXBERT_CLASSIFIER
+  if isinstance(
+      options.model_options, mo.AverageWordEmbeddingModelOptions
+  ) and (
+      options.supported_model
+      != ms.SupportedModels.AVERAGE_WORD_EMBEDDING_CLASSIFIER
   ):
     raise ValueError(
-        "Expected a Bert Classifier(MobileBERT or EXBERT), got "
-        f"{options.supported_model}"
+        "Expected AVERAGE_WORD_EMBEDDING_CLASSIFIER,"
+        f" got {options.supported_model}"
+    )
+  if isinstance(options.model_options, mo.BertModelOptions) and (
+      not isinstance(options.supported_model.value(), ms.BertClassifierSpec)
+  ):
+    raise ValueError(
+        f"Expected a Bert Classifier, got {options.supported_model}"
     )
 
 
@@ -113,15 +117,13 @@ class TextClassifier(classifier.Classifier):
     if options.hparams is None:
       options.hparams = options.supported_model.value().hparams
 
-    if (
-        options.supported_model == ms.SupportedModels.MOBILEBERT_CLASSIFIER
-        or options.supported_model == ms.SupportedModels.EXBERT_CLASSIFIER
-    ):
+    if isinstance(options.supported_model.value(), ms.BertClassifierSpec):
       text_classifier = _BertClassifier.create_bert_classifier(
           train_data, validation_data, options
       )
-    elif (options.supported_model ==
-          ms.SupportedModels.AVERAGE_WORD_EMBEDDING_CLASSIFIER):
+    elif isinstance(
+        options.supported_model.value(), ms.AverageWordEmbeddingClassifierSpec
+    ):
       text_classifier = _AverageWordEmbeddingClassifier.create_average_word_embedding_classifier(
           train_data, validation_data, options
       )
@@ -348,12 +350,12 @@ class _BertClassifier(TextClassifier):
     self._hparams = hparams
     self._callbacks = model_util.get_default_callbacks(self._hparams.export_dir)
     self._model_options = model_options
+    self._text_preprocessor: preprocessor.BertClassifierPreprocessor = None
     with self._hparams.get_strategy().scope():
       self._loss_function = loss_functions.SparseFocalLoss(
           self._hparams.gamma, self._num_classes
       )
       self._metric_functions = self._create_metrics()
-      self._text_preprocessor: preprocessor.BertClassifierPreprocessor = None
 
   @classmethod
   def create_bert_classifier(
@@ -410,7 +412,7 @@ class _BertClassifier(TextClassifier):
     self._text_preprocessor = preprocessor.BertClassifierPreprocessor(
         seq_len=self._model_options.seq_len,
         do_lower_case=self._model_spec.do_lower_case,
-        uri=self._model_spec.downloaded_files.get_path(),
+        uri=self._model_spec.get_path(),
         model_name=self._model_spec.name,
     )
     return (
@@ -488,12 +490,26 @@ class _BertClassifier(TextClassifier):
             name="input_type_ids",
         ),
     )
-    encoder = hub.KerasLayer(
-        self._model_spec.downloaded_files.get_path(),
-        trainable=self._model_options.do_fine_tuning,
-    )
-    encoder_outputs = encoder(encoder_inputs)
-    pooled_output = encoder_outputs["pooled_output"]
+    if self._model_spec.is_tf2:
+      encoder = hub.KerasLayer(
+          self._model_spec.get_path(),
+          trainable=self._model_options.do_fine_tuning,
+      )
+      encoder_outputs = encoder(encoder_inputs)
+      pooled_output = encoder_outputs["pooled_output"]
+    else:
+      renamed_inputs = dict(
+          input_ids=encoder_inputs["input_word_ids"],
+          input_mask=encoder_inputs["input_mask"],
+          segment_ids=encoder_inputs["input_type_ids"],
+      )
+      encoder = hub_loader.HubKerasLayerV1V2(
+          self._model_spec.get_path(),
+          signature="tokens",
+          output_key="pooled_output",
+          trainable=self._model_options.do_fine_tuning,
+      )
+      pooled_output = encoder(renamed_inputs)
 
     output = tf.keras.layers.Dropout(rate=self._model_options.dropout_rate)(
         pooled_output)

mediapipe/model_maker/python/text/text_classifier/text_classifier_test.py

@@ -104,13 +104,9 @@ class TextClassifierTest(tf.test.TestCase, parameterized.TestCase):
 
   @parameterized.named_parameters(
       # Skipping mobilebert b/c OSS test timeout/flakiness: b/275624089
-      # dict(
-      #     testcase_name='mobilebert',
-      #     supported_model=text_classifier.SupportedModels.MOBILEBERT_CLASSIFIER,
-      # ),
       dict(
-          testcase_name='exbert',
-          supported_model=text_classifier.SupportedModels.EXBERT_CLASSIFIER,
+          testcase_name='mobilebert',
+          supported_model=text_classifier.SupportedModels.MOBILEBERT_CLASSIFIER,
       ),
   )
   def test_create_and_train_bert(self, supported_model):
@@ -156,7 +152,7 @@ class TextClassifierTest(tf.test.TestCase, parameterized.TestCase):
 
   def test_label_mismatch(self):
     options = text_classifier.TextClassifierOptions(
-        supported_model=(text_classifier.SupportedModels.EXBERT_CLASSIFIER)
+        supported_model=(text_classifier.SupportedModels.MOBILEBERT_CLASSIFIER)
     )
     train_tf_dataset = tf.data.Dataset.from_tensor_slices([[0]])
     train_data = text_classifier.Dataset(train_tf_dataset, ['foo'], 1)
@@ -174,13 +170,13 @@ class TextClassifierTest(tf.test.TestCase, parameterized.TestCase):
     train_data, validation_data = self._get_data()
 
     avg_options = text_classifier.TextClassifierOptions(
-        supported_model=(text_classifier.SupportedModels.EXBERT_CLASSIFIER),
+        supported_model=(text_classifier.SupportedModels.MOBILEBERT_CLASSIFIER),
         model_options=text_classifier.AverageWordEmbeddingModelOptions(),
     )
     with self.assertRaisesWithLiteralMatch(
         ValueError,
         'Expected AVERAGE_WORD_EMBEDDING_CLASSIFIER, got'
-        ' SupportedModels.EXBERT_CLASSIFIER',
+        ' SupportedModels.MOBILEBERT_CLASSIFIER',
     ):
       text_classifier.TextClassifier.create(
           train_data, validation_data, avg_options
@@ -194,7 +190,7 @@ class TextClassifierTest(tf.test.TestCase, parameterized.TestCase):
     )
     with self.assertRaisesWithLiteralMatch(
         ValueError,
-        'Expected a Bert Classifier(MobileBERT or EXBERT), got'
+        'Expected a Bert Classifier, got'
         ' SupportedModels.AVERAGE_WORD_EMBEDDING_CLASSIFIER',
     ):
       text_classifier.TextClassifier.create(
@@ -203,7 +199,7 @@ class TextClassifierTest(tf.test.TestCase, parameterized.TestCase):
 
   def test_bert_loss_and_metrics_creation(self):
     train_data, validation_data = self._get_data()
-    supported_model = text_classifier.SupportedModels.EXBERT_CLASSIFIER
+    supported_model = text_classifier.SupportedModels.MOBILEBERT_CLASSIFIER
     hparams = text_classifier.BertHParams(
         desired_recalls=[0.2],
         desired_precisions=[0.9],