Udemy

Text Mining, Scraping and Sentiment Analysis with R

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  • 4,097 Students
  • Updated 11/2017
4.2
(493 Ratings)
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Course Information

Registration period
Year-round Recruitment
Course Level
Study Mode
Duration
3 Hour(s) 8 Minute(s)
Language
English
Taught by
R-Tutorials Training
Rating
4.2
(493 Ratings)
2 views

Course Overview

Text Mining, Scraping and Sentiment Analysis with R

Learn how to use Twitter social media data for your R text mining work.

Are you an advanced R user, looking to expand your R toolbox?

Are you interested in social media sentiment analysis?

Do you want to learn how you can get and use Twitter data for your R analysis?

Do you want to learn how you can systematically find related words (keywords) to a search term using Twitter and R?

Are you interested in creating visualizations like wordclouds out of text data?

Do you want to learn which R packages you can use for web scraping and text analysis purposes?

If YES came to your mind to some of those points – this course might be tailored towards your needs!

This course will teach you anything you need to know about how to handle social media data in R. We will use Twitter data as our example dataset.

During this course we will take a walk through the whole text analysis process of Twitter data.

At first you will learn which packages are available for social media analysis.

You will learn how to scrape social media (Twitter) data and get it into your R session.

After that we will filter, clean and structure our text corpus.

The next step is the visualization of the text data via wordclouds and dendrograms.

And in the last section we will do a whole sentiment analysis by using a common word lexicon.

All of those steps are accompanied by exercise sessions so that you can check if you can put the information to work.

According to the teaching principles of R Tutorials every section is enforced with exercises for a better learning experience. You can download the code pdf of every section to try the presented code on your own.

Disclaimer required by Twitter: 'TWITTER, TWEET, RETWEET and the Twitter logo are trademarks of Twitter, Inc or its affiliates.'

Course Content

  • 4 section(s)
  • 38 lecture(s)
  • Section 1 Introduction
  • Section 2 Scraping and Text Mining
  • Section 3 Working with Strings - gsub and the Regular Expression syntax
  • Section 4 Sentiment Analysis

What You’ll Learn

  • use R for social media mining
  • get data from Twitter to do text analysis
  • perform web scraping tasks using the twitteR package
  • know which packages to use for web scraping
  • get R and Twitter connected
  • know how to perform a sentiment analysis in R
  • plot text data visualizations

Reviews

  • D
    Data Scientist
    1.5

    Please answer the questions!

  • R
    Ragesh T S
    5.0

    Great insights even for a beginner, learned a lot, crisp and clear, thanks a lot

  • B
    Bill Bentley
    4.0

    The course has been useful. One problem is that it was recorded some time in the past and newer versions of functions act differently so I had to find a few ways around problems using Google search but that is good practice too.

  • O
    Oleg Firsin
    3.0

    It was overall OK, but 1) narration speed was too slow, 2) some of the actions shown couldn't be replicated without googling the problem and adding something that wasn't shown, 3) the coverage is rather limited, as there are many other tasks one might need to do, like extracting user information, separating tweets from retweets, comparing geographic distribution of sentiment, etc., etc.

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