Here is possible to find some learnings and examples on how to leverage the functionality provided by the tidytext package to perform some basic sentiment analysis using lexicons. The supporting .Rmd file can be found in this repo.
Background information
Sentiment analysis is a fascinating problem. Sentiment analysis , alias opinion mining, is the field of study that analyses the opinions, sentiments, evaluations of people regrading entities such products, movies, services, etc..
Sentiment analysis refers to the use of natural language processing (NLP), text analysis and linguistic to identify subjective information from unstructured data. Sentiment analysis has a wide application in the context of social media.
To have a better overview and understanding of the theory & the challenges behind sentiment analysis, the material created by Dan Jurafsky & Christopher Manning for the “Natural Language Processing” MOOC at Coursera is a great starting point
- Slides around Sentiment Analysis
- Lesson Videos
Enjoy the learnings…