Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying Practical Machine Learning with R
  • Table Of Contents Toc
  • Feedback & Rating feedback
Practical Machine Learning with R

Practical Machine Learning with R

By : Jeyaraman, Olsen, Wambugu
5 (1)
close
close
Practical Machine Learning with R

Practical Machine Learning with R

5 (1)
By: Jeyaraman, Olsen, Wambugu

Overview of this book

With huge amounts of data being generated every moment, businesses need applications that apply complex mathematical calculations to data repeatedly and at speed. With machine learning techniques and R, you can easily develop these kinds of applications in an efficient way. Practical Machine Learning with R begins by helping you grasp the basics of machine learning methods, while also highlighting how and why they work. You will understand how to get these algorithms to work in practice, rather than focusing on mathematical derivations. As you progress from one chapter to another, you will gain hands-on experience of building a machine learning solution in R. Next, using R packages such as rpart, random forest, and multiple imputation by chained equations (MICE), you will learn to implement algorithms including neural net classifier, decision trees, and linear and non-linear regression. As you progress through the book, you’ll delve into various machine learning techniques for both supervised and unsupervised learning approaches. In addition to this, you’ll gain insights into partitioning the datasets and mechanisms to evaluate the results from each model and be able to compare them. By the end of this book, you will have gained expertise in solving your business problems, starting by forming a good problem statement, selecting the most appropriate model to solve your problem, and then ensuring that you do not overtrain it.
Table of Contents (8 chapters)
close
close

Model Selection by Multiple Disagreeing Metrics

What happens if the metrics do not agree on the ranking of our models? In the last chapter, on classification, we learned about the precision and recall metrics, which we "merged" into the F1 score, because it is easier to compare models on one metric than two. But what if we did not want to (or couldn't) merge two or more metrics into one (possibly arbitrary) metric?

Pareto Dominance

If a model is better than another model on one metrics, and at least as good on all other metrics, this model should be considered better overall. We say that the model dominates the other model.

If we remove all the models that are dominated by other models, we will have the nondominated models left. This set of models is referred to as the Pareto set (or the Pareto front). We will see in a moment why Pareto front is a fitting name.

Let's say that our Pareto set consists of two models. One has high precision, but low recall. The other...

Visually different images
CONTINUE READING
83
Tech Concepts
36
Programming languages
73
Tech Tools
Icon Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.
Icon Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.
Icon 50+ new titles added per month and exclusive early access to books as they are being written.
Practical Machine Learning with R
notes
bookmark Notes and Bookmarks search Search in title playlist Add to playlist download Download options font-size Font size

Change the font size

margin-width Margin width

Change margin width

day-mode Day/Sepia/Night Modes

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY

Submit Your Feedback

Modal Close icon
Modal Close icon
Modal Close icon