Exploring Everyday Things with R and Ruby : Learning About Everyday Things - Sau Sheong Chang

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Exploring Everyday Things with R and Ruby

Learning About Everyday Things

By: Sau Sheong Chang

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Paperback | 13 July 2012

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256 Pages

Dimensions(cm)
22.9 x 17.6 x 1.3

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If you're curious about how things work, this fun and intriguing guide will help you find real answers to everyday problems. By using fundamental math and doing simple programming with the Ruby and R languages, you'll learn how to model a problem and work toward a solution.

All you need is a basic understanding of programming. After a quick introduction to Ruby and R, you'll explore a wide range of questions by learning how to assemble, process, simulate, and analyze the available data. You'll learn to see everyday things in a different perspective through simple programs and common sense logic. Once you finish this book, you can begin your own journey of exploration and discovery.

Here are some of the questions you'll explore:

Determine how many restroom stalls can accommodate an office with 70 employees
Mine your email to understand your particular emailing habits
Use simple audio and video recording devices to calculate your heart rate
Create an artificial society-and analyze its behavioral patterns to learn how specific factors affect our real society

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Preface	p. vii
The Hat and the Whip	p. 1
Ruby	p. 1
Why Ruby	p. 2
Installing Ruby	p. 3
Running Ruby	p. 4
Requiring External Libraries	p. 5
Basic Ruby	p. 7
Everything Is an Object	p. 13
Shoes	p. 19
What Is Shoes?	p. 19
A Rainbow of Shoes	p. 20
Installing Shoes	p. 20
Programming Shoes	p. 21
Wrap-up	p. 25
Into the Matrix	p. 27
Introducing R	p. 27
Using R	p. 28
The R Console	p. 29
Sourcing Files and the Command Line	p. 31
Packages	p. 33
Programming R	p. 35
Variables and Functions	p. 36
Conditionals and Loops	p. 37
Data Structures	p. 39
Importing Data	p. 46
Charting	p. 51
Basic Graphs	p. 51
Introducing ggplot2	p. 53
Wrap-up	p. 61
Offices and Restrooms	p. 63
The Simple Scenario	p. 64
Representing Restrooms and Such	p. 66
The First Simulation	p. 69
Interpreting the Data	p. 73
The Second Simulation	p. 79
The Third Simulation	p. 83
The Final Simulation	p. 88
Wrap-up	p. 91
How to Bean Armchair Economist	p. 95
The Invisible Hand	p. 96
A Simple Market Economy	p. 96
The Producer	p. 97
The Consumer	p. 99
Some Convenience Methods	p. 100
The Simulation	p. 100
Analyzing the Simulation	p. 103
Resource Allocation by Price	p. 107
The Producer	p. 107
The Consumer	p. 108
Market	p. 109
The Simulation	p. 110
Analyzing the Second Simulation	p. 112
Price Controls	p. 116
Wrap-up	p. 119
Discover Yourself Through Email	p. 121
The Idea	p. 121
Grab and Parse	p. 122
The Emailing Habits of Enron Executives	p. 126
Discover Yourself	p. 130
Number of Messages by Day of the Month	p. 130
MailMiner	p. 134
Number of Messages by Day of Week	p. 137
Number of Messages by Month	p. 138
Number of Messages by Hour of the Day	p. 139
Interactions	p. 142
Comparative Interactions	p. 144
Text Mining	p. 147
Wrap-up	p. 154
In a Heartbeat	p. 157
My Beating Heart	p. 157
Auscultation	p. 158
Homemade Digital Stethoscope	p. 158
Extracting Data from Sound	p. 159
Generating the Heart Sounds Waveform	p. 164
Finding the Heart Rate	p. 166
Oximetry	p. 168
Homemade Pulse Oximeter	p. 168
Extracting Data from Video	p. 169
Generating the Heartbeat Waveform and Calculating the Heart Rate	p. 172
Wrap-up	p. 174
Schooling Fish and Flocking Birds	p. 177
The Origin of Boids	p. 178
Simulation	p. 179
Roids	p. 181
The Boid Flocking Rules	p. 187
Supporting Rules	p. 190
A Variation on the Rules	p. 191
Going Round and Round	p. 193
Putting in Obstacles	p. 194
Wrap-up	p. 195
Money, Sex, and Evolution	p. 197
It's a Good Life	p. 198
Money	p. 198
Sex	p. 211
Birth and Death	p. 211
The Changes	p. 211
Evolution	p. 218
What We Will Be Changing	p. 219
Implementation	p. 220
Wrap-up	p. 224
Index	p. 227
Table of Contents provided by Ingram. All Rights Reserved.

Exploring Everyday Things with R and Ruby

Learning About Everyday Things

At a Glance

Paperback

Shipping

How to return your order

Defective items

You Can Find This Book In

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