5 (1)

5 (1)

#### Overview of this book

Are you looking to start developing artificial intelligence applications? Do you need a refresher on key mathematical concepts? Full of engaging practical exercises, The Statistics and Calculus with Python Workshop will show you how to apply your understanding of advanced mathematics in the context of Python. The book begins by giving you a high-level overview of the libraries you'll use while performing statistics with Python. As you progress, you'll perform various mathematical tasks using the Python programming language, such as solving algebraic functions with Python starting with basic functions, and then working through transformations and solving equations. Later chapters in the book will cover statistics and calculus concepts and how to use them to solve problems and gain useful insights. Finally, you'll study differential equations with an emphasis on numerical methods and learn about algorithms that directly calculate values of functions. By the end of this book, you’ll have learned how to apply essential statistics and calculus concepts to develop robust Python applications that solve business challenges.
Preface
1. Fundamentals of Python
Free Chapter
2. Python's Main Tools for Statistics
3. Python's Statistical Toolbox
4. Functions and Algebra with Python
5. More Mathematics with Python
6. Matrices and Markov Chains with Python
7. Doing Basic Statistics with Python
8. Foundational Probability Concepts and Their Applications
9. Intermediate Statistics with Python
10. Foundational Calculus with Python
11. More Calculus with Python
12. Intermediate Calculus with Python

# 6. Matrices and Markov Chains with Python

## Activity 6.01: Building a Text Predictor Using a Markov Chain

Solution:

There are a few ways to approach this problem, and it is worth mentioning that the approach we will be taking is perhaps the easiest way in which text prediction is used. In actual practice, text predictions are far more complicated and have many other factors that affect them, which we will briefly cover at the end of the activity.

1. We will be using the transcript of the speech given by Winston Churchill at the House of Commons after the soldiers of the Allied forces were rescued from Dunkirk during World War II. The speech by itself is worth a read and can be easily found online if you are interested.

Note

2. This list is stored in a text file named `churchill.txt`. Read through that text file:
```# Churchill's speech