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Hands-On Graph Neural Networks Using Python

You're reading from  Hands-On Graph Neural Networks Using Python

Product type Book
Published in Apr 2023
Publisher Packt
ISBN-13 9781804617526
Pages 354 pages
Edition 1st Edition
Languages
Author (1):
Maxime Labonne Maxime Labonne
Profile icon Maxime Labonne

Table of Contents (25) Chapters

Preface 1. Part 1: Introduction to Graph Learning
2. Chapter 1: Getting Started with Graph Learning 3. Chapter 2: Graph Theory for Graph Neural Networks 4. Chapter 3: Creating Node Representations with DeepWalk 5. Part 2: Fundamentals
6. Chapter 4: Improving Embeddings with Biased Random Walks in Node2Vec 7. Chapter 5: Including Node Features with Vanilla Neural Networks 8. Chapter 6: Introducing Graph Convolutional Networks 9. Chapter 7: Graph Attention Networks 10. Part 3: Advanced Techniques
11. Chapter 8: Scaling Up Graph Neural Networks with GraphSAGE 12. Chapter 9: Defining Expressiveness for Graph Classification 13. Chapter 10: Predicting Links with Graph Neural Networks 14. Chapter 11: Generating Graphs Using Graph Neural Networks 15. Chapter 12: Learning from Heterogeneous Graphs 16. Chapter 13: Temporal Graph Neural Networks 17. Chapter 14: Explaining Graph Neural Networks 18. Part 4: Applications
19. Chapter 15: Forecasting Traffic Using A3T-GCN 20. Chapter 16: Detecting Anomalies Using Heterogeneous GNNs 21. Chapter 17: Building a Recommender System Using LightGCN 22. Chapter 18: Unlocking the Potential of Graph Neural Networks for Real-World Applications
23. Index 24. Other Books You May Enjoy

Scaling Up Graph Neural Networks with GraphSAGE

GraphSAGE is a GNN architecture designed to handle large graphs. In the tech industry, scalability is a key driver for growth. As a result, systems are inherently designed to accommodate millions of users. This ability requires a fundamental shift in how the GNN model works compared to GCNs and GATs. Thus, it is no surprise that GraphSAGE is the architecture of choice for tech companies such as Uber Eats and Pinterest.

In this chapter, we will learn about the two main ideas behind GraphSAGE. First, we will describe its neighbor sampling technique, which is at the core of its performance in terms of scalability. We will then explore three aggregation operators used to produce node embeddings. Besides the original approach, we will also detail the variants proposed by Uber Eats and Pinterest.

Moreover, GraphSAGE offers new possibilities in terms of training. We will implement two ways of training a GNN for two tasks – node...

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