[bigbird] move bigbird from nlp/projects to official/projects

PiperOrigin-RevId: 418851251

official/nlp/configs/encoders.py

@@ -16,9 +16,9 @@
 
 Includes configurations and factory methods.
 """
+import dataclasses
 from typing import Optional
 
-import dataclasses
 import gin
 import tensorflow as tf
 
@@ -26,7 +26,7 @@ from official.modeling import hyperparams
 from official.modeling import tf_utils
 from official.nlp.modeling import layers
 from official.nlp.modeling import networks
-from official.nlp.projects.bigbird import encoder as bigbird_encoder
+from official.projects.bigbird import encoder as bigbird_encoder
 
 
 @dataclasses.dataclass

official/nlp/projects/bigbird/encoder.py → official/projects/bigbird/encoder.py

@@ -20,8 +20,8 @@ import tensorflow as tf
 from official.modeling import activations
 from official.nlp import modeling
 from official.nlp.modeling import layers
-from official.nlp.projects.bigbird import recompute_grad
-from official.nlp.projects.bigbird import recomputing_dropout
+from official.projects.bigbird import recompute_grad
+from official.projects.bigbird import recomputing_dropout
 
 
 _MAX_SEQ_LEN = 4096

official/nlp/projects/bigbird/encoder_test.py → official/projects/bigbird/encoder_test.py

@@ -17,7 +17,7 @@
 import numpy as np
 import tensorflow as tf
 
-from official.nlp.projects.bigbird import encoder
+from official.projects.bigbird import encoder
 
 
 class BigBirdEncoderTest(tf.test.TestCase):

official/nlp/projects/bigbird/recomputing_dropout.py → official/projects/bigbird/recomputing_dropout.py

@@ -17,8 +17,8 @@
 import numpy as np
 import tensorflow as tf
 
-from official.nlp.projects.bigbird import recompute_grad as recompute_grad_lib
-from official.nlp.projects.bigbird import stateless_dropout as stateless_dropout_lib
+from official.projects.bigbird import recompute_grad as recompute_grad_lib
+from official.projects.bigbird import stateless_dropout as stateless_dropout_lib
 
 
 # Reimplements internal function