Book Image

Learning Data Mining with Python - Second Edition

By : Robert Layton
Book Image

Learning Data Mining with Python - Second Edition

By: Robert Layton

Overview of this book

This book teaches you to design and develop data mining applications using a variety of datasets, starting with basic classification and affinity analysis. This book covers a large number of libraries available in Python, including the Jupyter Notebook, pandas, scikit-learn, and NLTK. You will gain hands on experience with complex data types including text, images, and graphs. You will also discover object detection using Deep Neural Networks, which is one of the big, difficult areas of machine learning right now. With restructured examples and code samples updated for the latest edition of Python, each chapter of this book introduces you to new algorithms and techniques. By the end of the book, you will have great insights into using Python for data mining and understanding of the algorithms as well as implementations.
Table of Contents (20 chapters)
Title Page
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Training Naive Bayes


Now that we have extracted the blog posts, we can train our Naive Bayes model on them. The intuition is that we record the probability of a word being written by a particular gender, and record these values in our model. To classify a new sample, we would multiply the probabilities and find the most likely gender.

The aim of this code is to output a file that lists each word in the corpus, along with the frequencies of that word for each gender. The output file will look something like this:

"'ailleurs" {"female": 0.003205128205128205}
"'air" {"female": 0.003205128205128205}
"'an" {"male": 0.0030581039755351682, "female": 0.004273504273504274}
"'angoisse" {"female": 0.003205128205128205}
"'apprendra" {"male": 0.0013047113868622459, "female": 0.0014172668603481887}
"'attendent" {"female": 0.00641025641025641}
"'autistic" {"male": 0.002150537634408602}
"'auto" {"female": 0.003205128205128205}
"'avais" {"female": 0.00641025641025641}
"'avait" {"female": 0.004273504273504274...