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Hands-On Data Science with R

You're reading from   Hands-On Data Science with R Techniques to perform data manipulation and mining to build smart analytical models using R

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Product type Paperback
Published in Nov 2018
Publisher Packt
ISBN-13 9781789139402
Length 420 pages
Edition 1st Edition
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Authors (4):
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Nataraj Dasgupta Nataraj Dasgupta
Author Profile Icon Nataraj Dasgupta
Nataraj Dasgupta
Vitor Bianchi Lanzetta Vitor Bianchi Lanzetta
Author Profile Icon Vitor Bianchi Lanzetta
Vitor Bianchi Lanzetta
Doug Ortiz Doug Ortiz
Author Profile Icon Doug Ortiz
Doug Ortiz
Ricardo Anjoleto Farias Ricardo Anjoleto Farias
Author Profile Icon Ricardo Anjoleto Farias
Ricardo Anjoleto Farias
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Table of Contents (16) Chapters Close

Preface 1. Getting Started with Data Science and R FREE CHAPTER 2. Descriptive and Inferential Statistics 3. Data Wrangling with R 4. KDD, Data Mining, and Text Mining 5. Data Analysis with R 6. Machine Learning with R 7. Forecasting and ML App with R 8. Neural Networks and Deep Learning 9. Markovian in R 10. Visualizing Data 11. Going to Production with R 12. Large Scale Data Analytics with Hadoop 13. R on Cloud 14. The Road Ahead 15. Other Books You May Enjoy

Random forests – a collection of trees

It is almost a fact that combined forecasts tend to work better than single forecasts. This phenomenon is called the Wisdom of the Crowd. Random forests exploit the Wisdom of the Crowd while fitting and combining several trees. Due to this combination task, algorithms such as random forests are also called ensemble learning. Random forests are not the only ensemble learning algorithms; bagging, boosting, and committees also fit several models.

In this section, we are not only aiming at random forests but all those other kinds of models and packages that could possibly compete with them. This time we are not benchmarking accuracy only. Time elapsed will be taken into consideration. Note that it is a very simple measure and may widely vary from my end to yours.

The time needed to train a single neural network model is sometimes greater...
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