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Commit 67ac8214 authored by Chen Chen's avatar Chen Chen Committed by A. Unique TensorFlower
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Add a colab example that use tensorflow models pip package to finetune BERT. 

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{
"nbformat": 4,
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"metadata": {
"colab": {
"name": "How-to Guide: Using a PIP package for fine-tuning a BERT model",
"provenance": [],
"collapsed_sections": [],
"toc_visible": true
},
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"name": "python3",
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"cells": [
{
"cell_type": "markdown",
"metadata": {
"id": "5T_-iFRIqliG",
"colab_type": "text"
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"source": [
"## How-to Guide: Using a PIP package for fine-tuning a BERT model\n",
"\n",
"Author: [Chen Chen](https://github.com/chenGitHuber)\n",
"\n",
"In this example, we will work through fine-tuning a BERT model using the tensorflow-models PIP package."
]
},
{
"cell_type": "markdown",
"metadata": {
"id": "mY1vX5VAq4SS",
"colab_type": "text"
},
"source": [
"## License\n",
"\n",
"Copyright 2020 The TensorFlow Authors. All Rights Reserved.\n",
"\n",
"Licensed under the Apache License, Version 2.0 (the \"License\");\n",
"you may not use this file except in compliance with the License.\n",
"You may obtain a copy of the License at\n",
"\n",
" http://www.apache.org/licenses/LICENSE-2.0\n",
"\n",
"Unless required by applicable law or agreed to in writing, software\n",
"distributed under the License is distributed on an \"AS IS\" BASIS,\n",
"WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n",
"See the License for the specific language governing permissions and\n",
"limitations under the License."
]
},
{
"cell_type": "markdown",
"metadata": {
"id": "XV3k63bt0ihl",
"colab_type": "text"
},
"source": [
"## Learning objectives\n",
"\n",
"In this Colab notebook, you will learn how to fine-tune a BERT model using the TensorFlow Model Garden PIP package."
]
},
{
"cell_type": "markdown",
"metadata": {
"id": "MHA-RWherfG4",
"colab_type": "text"
},
"source": [
"## Enable the GPU acceleration\n",
"Please enable GPU for better performance.\n",
"* Navigate to Edit 🡒 Notebook settings\n",
"* Select GPU from the \"Hardware Accelerator\" drop-down list\n"
]
},
{
"cell_type": "markdown",
"metadata": {
"id": "l2B4N5Djrs2l",
"colab_type": "text"
},
"source": [
"## Install the Model Garden PIP package\n",
"\n",
"Install the Model Garden PIP package (tf-models-nightly) and other necessary PIP packages."
]
},
{
"cell_type": "code",
"metadata": {
"id": "VMYZDly6rx97",
"colab_type": "code",
"outputId": "146956ab-4568-4de6-c78e-cf25f115a5a8",
"colab": {
"base_uri": "https://localhost:8080/",
"height": 1000
}
},
"source": [
"pip install tf-models-nightly"
],
"execution_count": 0,
"outputs": [
{
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"metadata": {
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"source": [
"## BERT Fine-tuning\n",
"\n",
"The following code import necessary modules for fine-tuning a BERT model on a classification task.\n",
"\n"
]
},
{
"cell_type": "code",
"metadata": {
"id": "rV8MIX7g078-",
"colab_type": "code",
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"source": [
"%tensorflow_version 2.x\n",
"import tensorflow as tf\n",
"\n",
"import json\n",
"import math\n",
"\n",
"from official.utils.misc import distribution_utils\n",
"from official.nlp import optimization\n",
"from official.nlp.bert import bert_models\n",
"from official.nlp.bert import configs as bert_configs\n",
"from official.nlp.bert import run_classifier\n",
"from official.modeling import activations\n",
"from official.nlp.modeling import networks\n",
"from official.nlp.modeling.models import bert_classifier"
],
"execution_count": 0,
"outputs": []
},
{
"cell_type": "markdown",
"metadata": {
"id": "DIuS8nYD08n3",
"colab_type": "text"
},
"source": [
"This section of code performs the following tasks:\n",
"* Load data for fine-tuning\n",
"* Fine-tune a BERT model\n",
"* Save the fine-tuned model to a TensorFlow SavedModel file\n",
"\n",
"Please check [create_finetuning_data.py](https://github.com/tensorflow/models/blob/master/official/nlp/data/create_finetuning_data.py) if you want to know how the train/eval data are created."
]
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"source": [
"\n",
"train_data_path = \"gs://cloud-tpu-checkpoints/bert/classification/mrpc_train.tf_record\"\n",
"eval_data_path = \"gs://cloud-tpu-checkpoints/bert/classification/mrpc_eval.tf_record\"\n",
"input_meta_path = \"gs://cloud-tpu-checkpoints/bert/classification/mrpc_meta_data\"\n",
"\n",
"bert_config_file = \"gs://cloud-tpu-checkpoints/bert/keras_bert/uncased_L-12_H-768_A-12/bert_config.json\"\n",
"ckpt_path = 'gs://cloud-tpu-checkpoints/bert/keras_bert/uncased_L-12_H-768_A-12/bert_model.ckpt'\n",
"\n",
"with tf.io.gfile.GFile(input_meta_path, 'rb') as reader:\n",
" input_meta_data = json.loads(reader.read().decode('utf-8'))\n",
"\n",
"max_seq_length = input_meta_data['max_seq_length']\n",
"num_classes = input_meta_data['num_labels']\n",
"batch_size = 32\n",
"eval_batch_size = 32\n",
"train_input_fn = run_classifier.get_dataset_fn(train_data_path, max_seq_length, batch_size, is_training=True)\n",
"eval_input_fn = run_classifier.get_dataset_fn(eval_data_path, max_seq_length, eval_batch_size, is_training=False)\n",
"\n",
"strategy = distribution_utils.get_distribution_strategy(\n",
" distribution_strategy='one_device', num_gpus=1)\n",
"\n",
"with strategy.scope():\n",
" training_dataset = train_input_fn()\n",
" evaluation_dataset = eval_input_fn()\n",
" bert_config = bert_configs.BertConfig.from_json_file(bert_config_file)\n",
" classifier_model, encoder = bert_models.classifier_model(\n",
" bert_config, num_classes, max_seq_length)\n",
"\n",
" checkpoint = tf.train.Checkpoint(model=encoder)\n",
" checkpoint.restore(ckpt_path).assert_consumed()\n",
"\n",
" epochs = 3\n",
" train_data_size = input_meta_data['train_data_size']\n",
" eval_data_size = input_meta_data['eval_data_size']\n",
" steps_per_epoch = int(train_data_size / batch_size)\n",
" warmup_steps = int(epochs * train_data_size * 0.1 / batch_size)\n",
" optimizer = optimization.create_optimizer(\n",
" 2e-5, num_train_steps=steps_per_epoch * epochs, num_warmup_steps=warmup_steps)\n",
"\n",
" def metric_fn():\n",
" return tf.keras.metrics.SparseCategoricalAccuracy(\n",
" 'test_accuracy', dtype=tf.float32)\n",
"\n",
" classifier_model.compile(optimizer=optimizer,\n",
" loss=run_classifier.get_loss_fn(num_classes=2),\n",
" metrics=[metric_fn()])\n",
" classifier_model.fit(\n",
" x=training_dataset,\n",
" validation_data=evaluation_dataset,\n",
" steps_per_epoch=steps_per_epoch,\n",
" epochs=epochs,\n",
" validation_steps=int(eval_data_size / eval_batch_size))\n",
"\n",
" classifier_model.save('/tmp/saved_model', include_optimizer=False, save_format='tf')"
],
"execution_count": 0,
"outputs": [
{
"output_type": "stream",
"text": [
"WARNING:tensorflow:BertClassifier inputs must come from `tf.keras.Input` (thus holding past layer metadata), they cannot be the output of a previous non-Input layer. Here, a tensor specified as input to \"bert_classifier\" was not an Input tensor, it was generated by layer input_mask.\n",
"Note that input tensors are instantiated via `tensor = tf.keras.Input(shape)`.\n",
"The tensor that caused the issue was: input_mask:0\n",
"WARNING:tensorflow:BertClassifier inputs must come from `tf.keras.Input` (thus holding past layer metadata), they cannot be the output of a previous non-Input layer. Here, a tensor specified as input to \"bert_classifier\" was not an Input tensor, it was generated by layer input_type_ids.\n",
"Note that input tensors are instantiated via `tensor = tf.keras.Input(shape)`.\n",
"The tensor that caused the issue was: input_type_ids:0\n",
"Epoch 1/3\n",
"114/114 [==============================] - 96s 840ms/step - loss: 0.5932 - test_accuracy: 0.6960 - val_loss: 0.5083 - val_test_accuracy: 0.7604\n",
"Epoch 2/3\n",
"114/114 [==============================] - 100s 878ms/step - loss: 0.4225 - test_accuracy: 0.8183 - val_loss: 0.4020 - val_test_accuracy: 0.8438\n",
"Epoch 3/3\n",
"114/114 [==============================] - 100s 880ms/step - loss: 0.2482 - test_accuracy: 0.9134 - val_loss: 0.4065 - val_test_accuracy: 0.8151\n",
"INFO:tensorflow:Assets written to: /tmp/saved_model/assets\n"
],
"name": "stdout"
}
]
}
]
}
\ No newline at end of file
official/pip_package/setup.py
View file @ 67ac8214
...@@ -78,6 +78,7 @@ setup( ...@@ -78,6 +78,7 @@ setup(
'official.r1*', 'official.r1*',
'official.pip_package*', 'official.pip_package*',
'official.benchmark*', 'official.benchmark*',
'official.colab*',
]), ]),
exclude_package_data={ exclude_package_data={
'': ['*_test.py',], '': ['*_test.py',],
......
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