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

Introducing Word2Vec

The first step to comprehending the DeepWalk algorithm is to understand its major component: Word2Vec.

Word2Vec has been one of the most influential deep-learning techniques in NLP. Published in 2013 by Tomas Mikolov et al. (Google) in two different papers, it proposed a new technique to translate words into vectors (also known as embeddings) using large datasets of text. These representations can then be used in downstream tasks, such as sentiment classification. It is also one of the rare examples of patented and popular ML architecture.

Here are a few examples of how Word2Vec can transform words into vectors:

We can see in this example that, in terms of the Euclidian distance, the word vectors for king and queen are closer than the ones for king and woman (4.37 versus 8.47). In general, other metrics, such as the popular cosine similarity, are used to measure...

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