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Machine Learning with PyTorch and Scikit-Learn

You're reading from   Machine Learning with PyTorch and Scikit-Learn Develop machine learning and deep learning models with Python

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Product type Paperback
Published in Feb 2022
Publisher Packt
ISBN-13 9781801819312
Length 774 pages
Edition 1st Edition
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Authors (3):
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Sebastian Raschka Sebastian Raschka
Author Profile Icon Sebastian Raschka
Sebastian Raschka
Yuxi (Hayden) Liu Yuxi (Hayden) Liu
Author Profile Icon Yuxi (Hayden) Liu
Yuxi (Hayden) Liu
Vahid Mirjalili Vahid Mirjalili
Author Profile Icon Vahid Mirjalili
Vahid Mirjalili
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Table of Contents (22) Chapters Close

Preface 1. Giving Computers the Ability to Learn from Data FREE CHAPTER 2. Training Simple Machine Learning Algorithms for Classification 3. A Tour of Machine Learning Classifiers Using Scikit-Learn 4. Building Good Training Datasets – Data Preprocessing 5. Compressing Data via Dimensionality Reduction 6. Learning Best Practices for Model Evaluation and Hyperparameter Tuning 7. Combining Different Models for Ensemble Learning 8. Applying Machine Learning to Sentiment Analysis 9. Predicting Continuous Target Variables with Regression Analysis 10. Working with Unlabeled Data – Clustering Analysis 11. Implementing a Multilayer Artificial Neural Network from Scratch 12. Parallelizing Neural Network Training with PyTorch 13. Going Deeper – The Mechanics of PyTorch 14. Classifying Images with Deep Convolutional Neural Networks 15. Modeling Sequential Data Using Recurrent Neural Networks 16. Transformers – Improving Natural Language Processing with Attention Mechanisms 17. Generative Adversarial Networks for Synthesizing New Data 18. Graph Neural Networks for Capturing Dependencies in Graph Structured Data 19. Reinforcement Learning for Decision Making in Complex Environments 20. Other Books You May Enjoy
21. Index

Introduction to graph data

Broadly speaking, graphs represent a certain way we describe and capture relationships in data. Graphs are a particular kind of data structure that is nonlinear and abstract. And since graphs are abstract objects, a concrete representation needs to be defined so the graphs can be operated on. Furthermore, graphs can be defined to have certain properties that may require different representations. Figure 18.1 summarizes the common types of graphs, which we will discuss in more detail in the following subsections:

Figure 18.1: Common types of graphs

Undirected graphs

An undirected graph consists of nodes (in graph theory also often called vertices) that are connected via edges where the order of the nodes and their connection does not matter. Figure 18.2 sketches two typical examples of undirected graphs, a friend graph, and a graph of a chemical molecule consisting of atoms connected through chemical bonds (we will be discussing such molecular...

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