Introduction to Sentiment Analysis
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This document provides an introduction to sentiment analysis. It begins with an overview of sentiment analysis and what it aims to do, which is to automatically extract subjective content like opinions from digital text and classify the sentiment as positive or negative. It then discusses the components of sentiment analysis like subjectivity and sources of subjective text. Different approaches to sentiment analysis are presented like lexicon-based, supervised learning, and unsupervised learning. Challenges in sentiment analysis are also outlined, such as dealing with language, domain, spam, and identifying reliable content. The document concludes with references for further reading.
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Introduction to Sentiment Analysis
- 1. An Introduction to Sentiment Analysis Jaganadh G Text Analytics Consultant http://jaganadhg.in jaganadhg@gmail.com 5th Jan 2013 Jaganadh G An Introduction to Sentiment Analysis
- 2. About me !! Software Engineer Specializing in Text Analytics Research & Development When free, teaches Python, Speaks about FOSS and blogs at http://jaganadhg.in Working as Big Data Specialist for a Fortune 500 Company I am a computational linguist / Linguist and Indologist, Book reviewer Maters Degree Holder in Sanskrit from University of Kerala Jaganadh G An Introduction to Sentiment Analysis
- 3. Introduction Web Today Jaganadh G An Introduction to Sentiment Analysis
- 4. Introduction Sentiment Picture Courtesy: http://webanalysis.blogspot.com/2011/09/sentiment-indicator-social-media-kpi.html Jaganadh G An Introduction to Sentiment Analysis
- 5. Introduction What other people think!!! Jaganadh G An Introduction to Sentiment Analysis
- 6. Introduction Friends and Family Picture Courtesy: http://ianvaleza.com/mlm-secrets-warm-market-approach-strategies/ Jaganadh G An Introduction to Sentiment Analysis
- 7. Introduction Survey Picture Courtesy: http://www.oksociety.in/the-guest-for-legitmate-sites-for-paid-surveys/ Jaganadh G An Introduction to Sentiment Analysis
- 8. Introduction Blogs, Forums, Social Network .... Picture Courtesy: http://imfoundation.blogspot.com/p/im-forumsblogs.html Picture Courtesy:http://www.my-social-network.org/ Jaganadh G An Introduction to Sentiment Analysis
- 9. Introduction Issues with blogs and forums Picture Courtesy: http://www.asunseenontv.com/4-fake-reviews/ Jaganadh G An Introduction to Sentiment Analysis
- 10. Introduction Now : Sentiment Analysis Jaganadh G An Introduction to Sentiment Analysis
- 11. What is Sentiment Analysis Sentiment Analysis Automated extraction of subjective content from digital text and predicting the subjectivity such as positive or negative. Jaganadh G An Introduction to Sentiment Analysis
- 12. Subjectivity Subjectivity Linguistic expression of somebody’s emotions, opinions, sentiment ....... Picture Courtesy: http://www.asunseenontv.com/4-fake-reviews/ Jaganadh G An Introduction to Sentiment Analysis
- 13. Subjective Text Sources Social Media Picture Courtesy: http://www.alchemyuk.com/online marketing/social media marketing.php Jaganadh G An Introduction to Sentiment Analysis
- 14. Example Review Nokia Lumia 800 Review Courtesy: http://www.techradar.com/reviews/phones/mobile-phones/nokia-lumia-800-1039101/user-review Jaganadh G An Introduction to Sentiment Analysis
- 15. The Big Picture Sentiment Analysis Jaganadh G An Introduction to Sentiment Analysis
- 16. Basics of Sentiment Analysis Components of Opinion Jaganadh G An Introduction to Sentiment Analysis
- 17. Basics of Sentiment Analysis Opinion Definition Jaganadh G An Introduction to Sentiment Analysis
- 18. Components of Sentiment Analysis Components Jaganadh G An Introduction to Sentiment Analysis
- 19. Approaches Approaches Lexicon based Supervised Learning Unsupervised Learning Keyword Jaganadh G An Introduction to Sentiment Analysis
- 20. Issues and Challenges Challenges Picture Courtesy: http://inventionmachine.com/the-Sustainable-Innovation-Blog/bid/51703/Three-Key- Challenges-to-Entering-New-Markets Jaganadh G An Introduction to Sentiment Analysis
- 21. Issues and Challenges Challenges Language Domain Spam Named Entity Identification Reliable content Jaganadh G An Introduction to Sentiment Analysis
- 22. Questions ?? Jaganadh G An Introduction to Sentiment Analysis
- 23. References B. Pang, Lillian Lee Opinion Mining and Sentiment Analysis, Now Publishers Inc, July 2008. B. Pang, Lillian Lee, S Vaithyanathan Thumbs up? sentiment classification using machine learning techniques, 2002. Jaganadh G An Introduction to Sentiment Analysis
- 24. Finally Jaganadh G An Introduction to Sentiment Analysis