Book Image

Hands-On Graph Neural Networks Using Python

By : Maxime Labonne
Book Image

Hands-On Graph Neural Networks Using Python

By: Maxime Labonne

Overview of this book

Graph neural networks are a highly effective tool for analyzing data that can be represented as a graph, such as networks, chemical compounds, or transportation networks. The past few years have seen an explosion in the use of graph neural networks, with their application ranging from natural language processing and computer vision to recommendation systems and drug discovery. Hands-On Graph Neural Networks Using Python begins with the fundamentals of graph theory and shows you how to create graph datasets from tabular data. As you advance, you’ll explore major graph neural network architectures and learn essential concepts such as graph convolution, self-attention, link prediction, and heterogeneous graphs. Finally, the book proposes applications to solve real-life problems, enabling you to build a professional portfolio. The code is readily available online and can be easily adapted to other datasets and apps. By the end of this book, you’ll have learned to create graph datasets, implement graph neural networks using Python and PyTorch Geometric, and apply them to solve real-world problems, along with building and training graph neural network models for node and graph classification, link prediction, and much more.
Table of Contents (25 chapters)
1
Part 1: Introduction to Graph Learning
5
Part 2: Fundamentals
10
Part 3: Advanced Techniques
18
Part 4: Applications
22
Chapter 18: Unlocking the Potential of Graph Neural Networks for Real-World Applications

Summary

This chapter introduced a new type of graph with spatiotemporal information. This temporal component is helpful in many applications, mostly related to time series forecasting. We described two types of graphs that fit this description: static graphs, where features evolve over time, and dynamic graphs, where features and topology can change. Both of them are handled by PyTorch Geometric Temporal, PyG’s extension dedicated to temporal graph neural networks.

Additionally, we covered two applications of temporal GNNs. First, we implemented the EvolveGCN architecture, which uses a GRU or an LSTM network to update the GCN parameters. We applied it by revisiting web traffic forecasting, a task we encountered in Chapter 6, Introducing Graph Convolutional Networks, and achieved excellent results with a limited dataset. Secondly, we used the MPNN-LSTM architecture for epidemic forecasting. We applied to the England Covid dataset a dynamic graph with a temporal signal, but...