April 2017
Beginner to intermediate
420 pages
9h 58m
English
book
Mastering Machine Learning with R - Second Edition
by Cory Lesmeister, Doug Ortiz, Vikram Dhillon, Miroslav Kopecky
Content preview from Mastering Machine Learning with R - Second Edition
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Data understanding and preparation
The primary package that we will use is tm, the text mining package. We will also need SnowballC for the stemming of the words, RColorBrewer for the color palettes in wordclouds, and the wordcloud package. Please ensure that you have these packages installed before attempting to load them:
> library(tm) > library(wordcloud) > library(RColorBrewer)
The data files are available for download in https://github.com/datameister66/data. Please ensure you put the text files into a separate directory because it will all go into our corpus for analysis.
Download the seven .txt files, for example sou2012.txt, into your working R directory. You can identify your current working directory and set it with these functions: ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.