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Causal Inference and Discovery in Python

You're reading from  Causal Inference and Discovery in Python

Product type Book
Published in May 2023
Publisher Packt
ISBN-13 9781804612989
Pages 456 pages
Edition 1st Edition
Languages
Author (1):
Aleksander Molak Aleksander Molak
Profile icon Aleksander Molak

Table of Contents (21) Chapters

Preface 1. Part 1: Causality – an Introduction
2. Chapter 1: Causality – Hey, We Have Machine Learning, So Why Even Bother? 3. Chapter 2: Judea Pearl and the Ladder of Causation 4. Chapter 3: Regression, Observations, and Interventions 5. Chapter 4: Graphical Models 6. Chapter 5: Forks, Chains, and Immoralities 7. Part 2: Causal Inference
8. Chapter 6: Nodes, Edges, and Statistical (In)dependence 9. Chapter 7: The Four-Step Process of Causal Inference 10. Chapter 8: Causal Models – Assumptions and Challenges 11. Chapter 9: Causal Inference and Machine Learning – from Matching to Meta-Learners 12. Chapter 10: Causal Inference and Machine Learning – Advanced Estimators, Experiments, Evaluations, and More 13. Chapter 11: Causal Inference and Machine Learning – Deep Learning, NLP, and Beyond 14. Part 3: Causal Discovery
15. Chapter 12: Can I Have a Causal Graph, Please? 16. Chapter 13: Causal Discovery and Machine Learning – from Assumptions to Applications 17. Chapter 14: Causal Discovery and Machine Learning – Advanced Deep Learning and Beyond 18. Chapter 15: Epilogue 19. Index 20. Other Books You May Enjoy

Associations

In this section, we’ll demonstrate how to quantify associational relationships using conditional probability. Then, we’ll briefly introduce structural causal models. Finally, we’ll implement conditional probability queries using Python.

We already learned a lot about associations. We know that associations are related to observing and that they allow us to generate predictions. Let’s take a look at mathematical tools that will allow us to talk about associations in a more formal way.

We can view the mathematics of rung one from a couple of angles. In this section, we’ll focus on the perspective of conditional probability.

Conditional probability

Conditional probability is the probability of one event, given that another event has occurred. A mathematical symbol that we use to express conditional probability is | (known as a pipe or vertical bar). We read <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:m="http://schemas.openxmlformats.org/officeDocument/2006/math"><mml:mi>P</mml:mi><mml:mo>(</mml:mo><mml:mi>X</mml:mi><mml:mo>|</mml:mo><mml:mi>Y</mml:mi><mml:mo>)</mml:mo></mml:math> as a probability of X given Y. This notation is a bit simplified (or...

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