Book Image

Dancing with Python

By : Robert S. Sutor
Book Image

Dancing with Python

By: Robert S. Sutor

Overview of this book

Dancing with Python helps you learn Python and quantum computing in a practical way. It will help you explore how to work with numbers, strings, collections, iterators, and files. The book goes beyond functions and classes and teaches you to use Python and Qiskit to create gates and circuits for classical and quantum computing. Learn how quantum extends traditional techniques using the Grover Search Algorithm and the code that implements it. Dive into some advanced and widely used applications of Python and revisit strings with more sophisticated tools, such as regular expressions and basic natural language processing (NLP). The final chapters introduce you to data analysis, visualizations, and supervised and unsupervised machine learning. By the end of the book, you will be proficient in programming the latest and most powerful quantum computers, the Pythonic way.
Table of Contents (29 chapters)
2
Part I: Getting to Know Python
10
PART II: Algorithms and Circuits
14
PART III: Advanced Features and Libraries
19
References
20
Other Books You May Enjoy
Appendices
Appendix C: The Complete UniPoly Class
Appendix D: The Complete Guitar Class Hierarchy
Appendix F: Production Notes

15.6 Classification

Classification provides answers to questions like the following:

  • Wear the blue, white, or yellow shirt?
  • Buy or lease the car?
  • Hire or don’t hire the person?
  • Watch or don’t watch the movie?
  • Take or don’t take the class?
  • Read the email or move it to the spam folder?
  • Issue the credit card or not?

Classification looks at an observation and places it in one of several classes. In the first question, the observation is the situation for which I am choosing the shirt and my past behavior. There are three possible shirts, and so three classes. The other questions require binary classification because they each have only two possible answers, “yes” or “no.”

The general classification discipline of statistics and machine learning does not limit itself to two classes, though binary classification...