Achieve TensorFlow certification with this comprehensive guide covering all exam topics using a hands-on, step-by-step approach—perfect for aspiring TensorFlow developers
Key Features
Build real-world computer vision, natural language, and time series applications
Learn how to overcome issues such as overfitting with techniques such as data augmentation
Master transfer learning—what it is and how to build applications with pre-trained models
Book Description
The TensorFlow Developer Certificate Guide is an indispensable resource for machine learning enthusiasts and data professionals seeking to master TensorFlow and validate their skills by earning the certification. This practical guide equips you with the skills and knowledge necessary to build robust deep learning models that effectively tackle real-world challenges across diverse industries.
You’ll embark on a journey of skill acquisition through easy-to-follow, step-by-step explanations and practical examples, mastering the craft of building sophisticated models using TensorFlow 2.x and overcoming common hurdles such as overfitting and data augmentation. With this book, you’ll discover a wide range of practical applications, including computer vision, natural language processing, and time series prediction.
To prepare you for the TensorFlow Developer Certificate exam, it offers comprehensive coverage of exam topics, including image classification, natural language processing (NLP), and time series analysis. With the TensorFlow certification, you’ll be primed to tackle a broad spectrum of business problems and advance your career in the exciting field of machine learning. Whether you are a novice or an experienced developer, this guide will propel you to achieve your aspirations and become a highly skilled TensorFlow professional.
What you will learn
Prepare for success in the TensorFlow Developer Certification exam
Master regression and classification modelling with TensorFlow 2.x
Build, train, evaluate, and fine-tune deep learning models
Combat overfitting using techniques such as dropout and data augmentation
Classify images, encompassing preprocessing and image data augmentation
Apply TensorFlow for NLP tasks like text classification and generation
Predict time series data, such as stock prices
Explore real-world case studies and engage in hands-on exercises
Who this book is for
This book is for machine learning and data science enthusiasts, as well as data professionals aiming to demonstrate their expertise in building deep learning applications with TensorFlow. Through a comprehensive hands-on approach, this book covers all the essential exam prerequisites to equip you with the skills needed to excel as a TensorFlow developer and advance your career in machine learning. A fundamental grasp of Python programming is the only prerequisite.
Author(s): Oluwole Fagbohun
Publisher: Packt Publishing Pvt Ltd
Year: 2023
Language: English
Pages: 873
TensorFlow Developer Certificate Guide
Contributors
About the author
About the reviewer
Preface
Who this book is for
What this book covers
To get the most out of this book
Download the example code files
Conventions used
Get in touch
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Part 1 – Introduction to TensorFlow
1
Introduction to Machine Learning
What is ML?
Types of ML algorithms
Supervised learning
Unsupervised learning
Semi-supervised learning
Reinforcement Learning
ML life cycle
The business case
Data gathering and understanding
Modeling
Error analysis
Model deployment and monitoring
Exploring ML use cases
Healthcare
The retail industry
The entertainment industry
Education
Agriculture
Introducing the learning journey
Why take the exam?
What is the exam all about?
How to ace the exam
When to take the exam
Exam tips
What to expect after the exam
Summary
Questions
Further reading
2
Introduction to TensorFlow
Technical requirements
What is TensorFlow?
Setting up our environment
Data representation
Creating tensors
Tensor rank
Properties of tensors
Basic tensor operations
Hello World in TensorFlow
Debugging and solving error messages
Summary
Questions
Further reading
3
Linear Regression with TensorFlow
Technical requirements
Linear regression with TensorFlow
Evaluating regression models
Salary prediction with TensorFlow
Loading the data
Data preprocessing
Model building
Model evaluation
Making predictions
Saving and loading models
Summary
Questions
Further reading
4
Classification with TensorFlow
Technical requirements
Classification with TensorFlow
Evaluating classification models
Confusion matrix
A student dropout prediction
Loading the data
Exploratory data analysis
Data preprocessing
Model building
Classification performance evaluation
Summary
Questions
Further reading
Part 2 – Image Classification with TensorFlow
5
Image Classification with Neural Networks
Technical requirements
The anatomy of neural networks
Forward propagation
Activation functions
Backward propagation
Learning rate
Building an image classifier with a neural network
Loading the data
Performing exploratory data analysis
Building the model
Compiling the model
Model visualization
Model fitting
Training monitoring
Evaluating the model
Model prediction
Summary
Questions
Further reading
6
Improving the Model
Technical requirements
Data is key
Fine-tuning hyperparameters of a neural network
Increasing the number of epochs
Early stopping using callbacks
Adding neurons in the hidden layer
Changing the optimizers
Changing the learning rate
Summary
Questions
Further reading
7
Image Classification with Convolutional Neural Networks
Challenges of image recognition with fully connected networks
Anatomy of CNNs
Convolutions
Impact of the number of filters
Impact of the size of the filter
Impact of stride
The boundary problem
Impact of padding
Putting it all together
Pooling
The fully connected layer
Fashion MNIST 2.0
Working with real-world images
Weather dataset classification
Image data preprocessing
Summary
Questions
Further reading
8
Handling Overfitting
Technical requirements
Overfitting in ML
What triggers overfitting
Detecting overfitting
Baseline model
Early stopping
Model simplification
L1 and L2 regularization
Dropout regularization
Adjusting the learning rate
Error analysis
Data augmentation
Summary
Questions
Further reading
9
Transfer Learning
Technical requirements
Introduction to transfer learning
Types of transfer learning
Building a real-world image classifier with Transfer learning
Loading the data
Modeling
Modeling with transfer learning
Transfer learning as a fine-tuned model
Summary
Questions
Further reading
Part 3 – Natural Language Processing with TensorFlow
10
Introduction to Natural Language Processing
Text preprocessing
Tokenization
Sequencing
Padding
Out of vocabulary
Word embeddings
The Yelp Polarity dataset
Embedding visualization
Improving the performance of the model
Increasing the size of the vocabulary
Adjusting the embedding dimension
Collecting more data
Dropout regularization
Trying a different optimizer
Summary
Questions
Further reading
11
NLP with TensorFlow
Understanding sequential data processing – from traditional neural networks to RNNs and LSTMs
The anatomy of RNNs
Variants of RNNs – LSTM and GRU
Text classification using the AG News dataset –
a comparative study
Using pretrained embeddings
Text classification using pretrained embedding
Using LSTMs to generate text
Story generation using LSTMs
Summary
Questions
Further reading
Part 4 – Time Series with TensorFlow
12
Introduction to Time Series, Sequences, and Predictions
Time series analysis – characteristics, applications, and forecasting techniques
Characteristics of time series
Types of time series data
Applications of time series
Techniques for forecasting time series
Evaluating time series forecasting techniques
Retail store forecasting
Data partitioning
Naïve forecasting
Moving average
Differencing
Time series forecasting with machine learning
Sales forecasting using neural networks
Summary
Questions
13
Time Series, Sequences, and Prediction with TensorFlow
Understanding and applying learning rate schedulers
In-built learning rate schedulers
Custom learning rate scheduler
CNNs for time series forecasting
RNNs in time series forecasting
LSTMs in time series forecasting
CNN-LSTM architecture for time series forecasting
Forecasting Apple stock price data
Note from the author
Questions
References
Index
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