official/nlp/modeling/networks/packed_sequence_embedding_test.py
# Copyright 2024 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.
# 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.
"""Tests for official.nlp.modeling.networks.packed_sequence_embedding."""
# Import libraries
from absl.testing import parameterized
import numpy as np
import tensorflow as tf, tf_keras
from official.nlp.modeling.networks import packed_sequence_embedding
class PackedSequenceEmbeddingTest(tf.test.TestCase, parameterized.TestCase):
def tearDown(self):
super(PackedSequenceEmbeddingTest, self).tearDown()
tf_keras.mixed_precision.set_global_policy('float32')
@parameterized.parameters([
(True, True, True),
(False, False, True),
(False, True, False),
(True, False, False),
])
def test_network_creation(self, use_position_id, pack_multiple_sequences,
use_float16):
"""Validate that the Keras object can be created."""
if use_float16:
tf_keras.mixed_precision.set_global_policy('mixed_float16')
seq_length = 16
vocab_size = 100
max_position_embeddings = 32
type_vocab_size = 2
embedding_width = 16
hidden_size = 32
embedding_cfg = dict(
vocab_size=vocab_size,
type_vocab_size=2,
embedding_width=embedding_width,
hidden_size=hidden_size,
max_seq_length=max_position_embeddings,
initializer=tf_keras.initializers.TruncatedNormal(stddev=0.02),
dropout_rate=0.1,
use_position_id=use_position_id,
pack_multiple_sequences=pack_multiple_sequences,
)
test_object = packed_sequence_embedding.PackedSequenceEmbedding(
**embedding_cfg)
input_word_ids = tf_keras.Input(shape=(seq_length,), dtype=tf.int32)
input_mask = tf_keras.Input(shape=(seq_length,), dtype=tf.int32)
input_type_ids = tf_keras.Input(shape=(seq_length,), dtype=tf.int32)
network_inputs = {
'input_word_ids': input_word_ids,
'input_mask': input_mask,
'input_type_ids': input_type_ids,
}
if use_position_id:
network_inputs['position_ids'] = tf_keras.Input(
shape=(seq_length,), dtype=tf.int32)
embedding, mask = test_object(network_inputs)
# Create a model based off of this network:
model = tf_keras.Model(network_inputs, [embedding, mask])
# Invoke the model. We can't validate the output data here (the model is too
# complex) but this will catch structural runtime errors.
batch_size = 3
word_id_data = np.random.randint(vocab_size, size=(batch_size, seq_length))
mask_data = np.random.randint(2, size=(batch_size, seq_length))
type_id_data = np.random.randint(
type_vocab_size, size=(batch_size, seq_length))
feed_input = {
'input_word_ids': word_id_data,
'input_mask': mask_data,
'input_type_ids': type_id_data,
}
if use_position_id:
feed_input['position_ids'] = np.random.randint(
seq_length, size=(batch_size, seq_length))
embeddings, attention_mask = model.predict(feed_input)
expected_embeddings_shape = [3, seq_length, hidden_size]
expected_attention_mask_shape = [3, seq_length, seq_length]
self.assertAllEqual(expected_embeddings_shape, embeddings.shape)
self.assertAllEqual(expected_attention_mask_shape, attention_mask.shape)
def test_serialize_deserialize(self):
tf_keras.mixed_precision.set_global_policy('mixed_float16')
# Create a network object that sets all of its config options.
embedding_cfg = dict(
vocab_size=100,
type_vocab_size=2,
embedding_width=64,
hidden_size=64,
max_seq_length=32,
initializer=tf_keras.initializers.TruncatedNormal(stddev=0.02),
dropout_rate=0.1,
use_position_id=True,
pack_multiple_sequences=False,
)
network = packed_sequence_embedding.PackedSequenceEmbedding(**embedding_cfg)
expected_config = dict(embedding_cfg)
expected_config['initializer'] = tf_keras.initializers.serialize(
tf_keras.initializers.get(expected_config['initializer']))
self.assertEqual(network.get_config(), expected_config)
# Create another network object from the first object's config.
new_network = packed_sequence_embedding.PackedSequenceEmbedding.from_config(
network.get_config())
# Validate that the config can be forced to JSON.
_ = new_network.to_json()
# If the serialization was successful, the new config should match the old.
self.assertAllEqual(network.get_config(), new_network.get_config())
if __name__ == '__main__':
tf.test.main()