Book Image

Mastering Machine Learning with R

By : Cory Lesmeister
Book Image

Mastering Machine Learning with R

By: Cory Lesmeister

Overview of this book

Related Content you might be interested in

Current Title:

Small book image
Mastering Machine Learning with R
Cory Lesmeister
Oct, 2015 | 400 pages
No titles found
Table of Contents (20 chapters)
Mastering Machine Learning with R
Mastering Machine Learning with R
Credits
Credits
About the Author
About the Author
About the Reviewers
About the Reviewers
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
A Process for Success
A Process for Success
The process
Business understanding
Data understanding
Data preparation
Modeling
Evaluation
Deployment
Algorithm flowchart
Summary
2
Linear Regression – The Blocking and Tackling of Machine Learning
Linear Regression – The Blocking and Tackling of Machine Learning
Univariate linear regression
Multivariate linear regression
Other linear model considerations
Summary
3
Logistic Regression and Discriminant Analysis
Logistic Regression and Discriminant Analysis
Classification methods and linear regression
Logistic regression
Model selection
Summary
4
Advanced Feature Selection in Linear Models
Advanced Feature Selection in Linear Models
Regularization in a nutshell
Business case
Modeling and evaluation
Model selection
Summary
5
More Classification Techniques – K-Nearest Neighbors and Support Vector Machines
More Classification Techniques – K-Nearest Neighbors and Support Vector Machines
K-Nearest Neighbors
Support Vector Machines
Business case
Feature selection for SVMs
Summary
6
Classification and Regression Trees
Classification and Regression Trees
Introduction
An overview of the techniques
Business case
Summary
7
Neural Networks
Neural Networks
Neural network
Deep learning, a not-so-deep overview
Business understanding
Data understanding and preparation
Modeling and evaluation
An example of deep learning
Summary
8
Cluster Analysis
Cluster Analysis
Hierarchical clustering
K-means clustering
Gower and partitioning around medoids
Data understanding and preparation
Modeling and evaluation
Summary
9
Principal Components Analysis
Principal Components Analysis
An overview of the principal components
Modeling and evaluation
Summary
10
Market Basket Analysis and Recommendation Engines
Market Basket Analysis and Recommendation Engines
An overview of a market basket analysis
Business understanding
Data understanding and preparation
Modeling and evaluation
An overview of a recommendation engine
Business understanding and recommendations
Data understanding, preparation, and recommendations
Modeling, evaluation, and recommendations
Summary
11
Time Series and Causality
Time Series and Causality
Univariate time series analysis
Modeling and evaluation
Summary
12
Text Mining
Text Mining
Text mining framework and methods
Topic models
Modeling and evaluation
Summary
R Fundamentals
R Fundamentals
Introduction
Getting R up and running
Using R
Data frames and matrices
Summary stats
Installing and loading the R packages
Summary
Index
Index

Data understanding and preparation

To start, we will load these three packages. The data is in the MASS package, but this is a required dependent package loaded with neuralnet:

> library(caret)

> library(neuralnet)
Loading required package: grid
Loading required package: MASS

> library(vcd)

The neuralnet package will be used for the building of the model and caret for the data preparation. The vcd package will assist us in data visualization. Let's load the data and examine its structure:

> data(shuttle)

> str(shuttle)
'data.frame':256 obs. of  7 variables:
 $ stability: Factor w/ 2 levepicels "stab","xstab": 2 2 2 2 2 2 2 2 2 2 ...
 $ error    : Factor w/ 4 levels "LX","MM","SS",..: 1 1 1 1 1 1 1 1 1 1 ...
 $ sign     : Factor w/ 2 levels "nn","pp": 2 2 2 2 2 2 1 1 1 1 ...
 $ wind     : Factor w/ 2 levels "head","tail": 1 1 1 2 2 2 1 1 1 2 ...
 $ magn     : Factor w/ 4 levels "Light","Medium",..: 1 2 4 1 2 4 1 2 4 1 ...
 $ vis      : Factor w/ 2 levels "no","yes": 1 1...
Previous Section
End of Section 5
Next Section