November 2018
Beginner to intermediate
420 pages
10h 4m
English
book
Hands-On Data Science with R
by Doug Ortiz, Vitor Bianchi Lanzetta, Nataraj Dasgupta, Ricardo Anjoleto Farias
Content preview from Hands-On Data Science with R
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Retrieving text from the web
There are numerous ways to retrieve text from the web. The previous section used the Hypertext Transfer Protocol (HTTP) through the httr package to retrieve text from the web. A combination of substr() and regexpr() was then used to extract only a small piece of information from it.
This section will show you how to retrieve text from the web using two different packages:
- rvest: This can easily perform common web scrapping tasks
- rtweet: It works with Twitter's web API to gather data
There are numerous ways to use data gathered this way. To name a few, it could be used to develop stock trading, marketing strategies, train chatbots, run sentiment analysis, seeks candidates for a job, or phrase click baits. Our ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.