Preface
This updated and expanded second edition brings several significant improvements to help you stay ahead in the evolving field of graph machine learning. Compared to the previous version, this edition features refined chapters for improved clarity and flow, new examples utilizing both legacy tools and modern frameworks such as PyTorch and DGL, and entirely new chapters covering cutting-edge topics such as temporal graph machine learning and the integration of large language models (LLMs).
Graph Machine Learning provides a powerful toolkit for processing network-structured data and leveraging the relationships between entities for predictive modeling, analytics, and more. You'll begin with a concise introduction to graph theory, graph machine learning, and neural networks, building a foundational understanding of their principles and applications. As you progress, you'll dive into the core machine learning models for graph representation learning, exploring their goals, inner workings, and practical implementation across various supervised and unsupervised tasks. You'll develop an end-to-end machine learning pipeline, from data preprocessing to training and prediction, to fully harness the potential of graph data. Throughout the book, you'll find real-world scenarios such as social network analysis, natural language processing with graphs, and financial transaction systems. The later chapters take you through the creation of scalable, data-intensive applications for storing, querying, and processing graph data and introduce you to the recent breakthroughs and emerging trends in the domain, some of which are the interaction between graphs and LLMs used in the context of generative AI and retrieval-augmented generation (RAG) systems.
By the end of this book, you will have understood the key concepts of graph theory and machine learning algorithms, allowing you to develop impactful graph-based machine learning solutions.
Who this book is for
This book is for data analysts, graph developers, graph analysts, and graph professionals who want to leverage the information embedded in the connections and relations between data points, unravel hidden structures, and exploit topological information to boost their analysis and models' performance. The book will also be useful for data scientists and machine learning developers who want to build machine learning-driven graph databases.
What this book covers
Chapter 1, Getting Started with Graphs, introduces the basic concepts of graph theory using the NetworkX Python library.
Chapter 2, Graph Machine Learning, introduces the main concepts of graph machine learning and graph embedding techniques.
Chapter 3, Neural Networks and Graphs, introduces Graph Neural Networks (GNNs) and the leading libraries for graph-based deep learning.
Chapter 4, Unsupervised Graph Learning, covers recent unsupervised graph embedding methods.
Chapter 5, Supervised Graph Learning, covers recent supervised graph embedding methods.
Chapter 6, Solving Common Graph-Based Machine Learning Problems, introduces the most common machine learning tasks on graphs.
Chapter 7, Social Network Graphs, shows an application of machine learning algorithms on social network data.
Chapter 8, Text Analytics and Natural Language Processing Using Graphs, shows an application of machine learning algorithms on a natural language processing task.
Chapter 9, Graphs Analysis for Credit Card Transactions, shows an application of machine learning algorithms in credit card fraud detection.
Chapter 10, Building a Data-Driven Graph-Powered Application, introduces some technologies and techniques useful to deal with large graphs.
Chapter 11, Temporal Graph Machine Learning, focuses on techniques to model and learn from dynamic, time-evolving graph data.
Chapter 12, GraphML and LLMs, explores how graph structures can enhance LLMs and how LLMs can be used for graph-based tasks.
Chapter 13, Novel Trends on Graphs, introduces some novel trends (algorithms and applications) of graph machine learning.
To get the most out of this book
We recommend that you use Docker to have a reproducible environment and stable dependency sets. The provided Docker images - one for each chapter - ship with a Jupyter installation and a Python kernel with the dependencies pre-installed, which you can use to run all the examples. For some chapters, Neo4j, JanusGraph, and Gephi are also needed.
Software/hardware covered in the book
OS requirements
Python
Windows, macOS, and Linux (any)
Neo4j
Windows, macOS, and Linux (any)
Gephi
Windows, macOS, and Linux (any)
Docker
Windows, macOS, and Linux (any)
A beginner-level understanding of graph databases and graph data is required. Intermediate-level working knowledge of Python programming and machine learning is also expected to make the most of this book.
The authors acknowledge the use of cutting-edge AI, such as ChatGPT, with the sole aim of enhancing the language and clarity within the book, thereby ensuring a smooth reading experience for readers. It's important to note that the content itself has been crafted by the authors and edited by a professional publishing team.
Download the example code files
The code bundle for the book is hosted on GitHub at https://github.com/PacktPublishing/Graph-Machine-Learning. We also have other code bundles from our rich catalog of books and videos available at https://github.com/PacktPublishing. Check them out!
Conventions used
There are a number of text conventions used throughout this book.
CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and X/Twitter handles. For example: "For this exercise, we will be using a GraphSAGE encoder with three layers of 32, 32, and 16 dimensions, respectively."
A block of code is set as follows:
TMF_model = TMF(num_nodes, hid_dim, win_size, num_epochs, alpha, beta, theta, learn_rate, device) adj_est = TMF_model.TMF_fun(adj_list) Any command-line input or output is written as follows:
Precision: 0.9636952636282395 Recall: 0.9777853337866939 F1-Score: 0.9706891701828411 Warnings or important notes appear like this.
Tips and tricks appear like this.
Get in touch
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