Book Image

Hands-On Data Science and Python Machine Learning

By : Frank Kane
Book Image

Hands-On Data Science and Python Machine Learning

By: Frank Kane

Overview of this book

Join Frank Kane, who worked on Amazon and IMDb’s machine learning algorithms, as he guides you on your first steps into the world of data science. Hands-On Data Science and Python Machine Learning gives you the tools that you need to understand and explore the core topics in the field, and the confidence and practice to build and analyze your own machine learning models. With the help of interesting and easy-to-follow practical examples, Frank Kane explains potentially complex topics such as Bayesian methods and K-means clustering in a way that anybody can understand them. Based on Frank’s successful data science course, Hands-On Data Science and Python Machine Learning empowers you to conduct data analysis and perform efficient machine learning using Python. Let Frank help you unearth the value in your data using the various data mining and data analysis techniques available in Python, and to develop efficient predictive models to predict future results. You will also learn how to perform large-scale machine learning on Big Data using Apache Spark. The book covers preparing your data for analysis, training machine learning models, and visualizing the final data analysis.
Table of Contents (11 chapters)

Improving the results of movie similarities

Let's figure out what went wrong with our movie similarities there. We went through all this exciting work to compute correlation scores between movies based on their user ratings vectors, and the results we got kind of sucked. So, just to remind you, we looked for movies that are similar to Star Wars using that technique, and we ended up with a bunch of weird recommendations at the top that had a perfect correlation.

And, most of them were very obscure movies. So, what do you think might be going on there? Well, one thing that might make sense is, let's say we have a lot of people watch Star Wars and some other obscure film. We'd end up with a good correlation between these two movies because they're tied together by Star Wars, but at the end of the day, do we really want to base our recommendations on the behavior...