Merge branch 'tensorflow:master' into panoptic-deeplab-modeling

LICENSE

-Copyright 2016 The TensorFlow Authors.  All rights reserved.
+Copyright 2022 Google LLC. All rights reserved.
+
+All files in the following folders:
+/community
+/official
+/orbit
+/research
+/tensorflow_models
+
+Are licensed as follows:
 
                                  Apache License
                            Version 2.0, January 2004

official/LICENSE

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official/README.md

@@ -84,7 +84,7 @@ as tagged branches or [downloadable releases](https://github.com/tensorflow/mode
 * Model repository version numbers match the target TensorFlow release,
 such that
 [release v2.5.0](https://github.com/tensorflow/models/releases/tag/v2.5.0)
-are compatible with
+is compatible with
 [TensorFlow v2.5.0](https://github.com/tensorflow/tensorflow/releases/tag/v2.5.0).
 
 Please follow the below steps before running models in this repository.
@@ -121,7 +121,7 @@ If you are using nlp packages, please also install **tensorflow-text**:
 pip install tensorflow-text
 ```
 
-Please check out our [example](colab/fine_tuning_bert.ipynb)
+Please check out our [example](https://github.com/tensorflow/text/blob/master/docs/tutorials/fine_tune_bert.ipynb)
 to learn how to use a PIP package.
 
 Note that **tf-models-official** may not include the latest changes in this

official/__init__.py

-# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

official/common/__init__.py

-# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

official/common/dataset_fn.py

-# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

official/common/distribute_utils.py

-# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

official/common/distribute_utils_test.py

-# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

official/common/flags.py

-# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

official/common/registry_imports.py

-# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

official/common/streamz_counters.py

-# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

official/core/__init__.py

-# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

official/core/actions.py

-# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -201,7 +201,7 @@ def get_train_actions(
   """Gets train actions for TFM trainer."""
   train_actions = []
   # Adds pruning callback actions.
-  if hasattr(params.task, 'pruning'):
+  if hasattr(params.task, 'pruning') and params.task.pruning:
     train_actions.append(
         PruningAction(
             export_dir=model_dir,

official/core/actions_test.py

-# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

official/core/base_task.py

-# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -101,9 +101,11 @@ class Task(tf.Module, metaclass=abc.ABCMeta):
     ckpt_dir_or_file = self.task_config.init_checkpoint
     logging.info("Trying to load pretrained checkpoint from %s",
                  ckpt_dir_or_file)
-    if tf.io.gfile.isdir(ckpt_dir_or_file):
+    if ckpt_dir_or_file and tf.io.gfile.isdir(ckpt_dir_or_file):
       ckpt_dir_or_file = tf.train.latest_checkpoint(ckpt_dir_or_file)
     if not ckpt_dir_or_file:
+      logging.info("No checkpoint file found from %s. Will not load.",
+                   ckpt_dir_or_file)
       return
 
     if hasattr(model, "checkpoint_items"):

official/core/base_trainer.py

-# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -370,6 +370,11 @@ class Trainer(_AsyncTrainer):
     """Accesses the training checkpoint."""
     return self._checkpoint
 
+  @property
+  def checkpoint_exporter(self):
+    """Accesses the checkpoint exporter."""
+    return self._checkpoint_exporter
+
   def train_loop_end(self):
     """See base class."""
     self.join()

official/core/base_trainer_test.py

-# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

official/core/config_definitions.py

-# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

official/core/exp_factory.py

-# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

official/core/export_base.py

-# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
+# Copyright 2022 The TensorFlow Authors. All Rights Reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.