Opinion Mining and Sentiment Analysis Issues and Challenges
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This document discusses opinion mining and sentiment analysis. It begins with an introduction to the topic, explaining how people use blogs, forums and social media to share opinions. It then defines sentiment analysis as the automated extraction of subjective content and predicting sentiment from digital text. The document outlines the key components of sentiment analysis, including subjectivity, opinion definition and the components that are analyzed. It also discusses some common approaches to sentiment analysis and some of the main challenges, such as dealing with language, domain specificity, spam and named entity identification.
Opinion Mining and Sentiment Analysis Issues and Challenges
- 1. Opinion Mining and Sentiment Analysis Issues and Challenges Jaganadh G Project Lead NLP R&D 365Media Pvt. Ltd. [email protected] DRDO Sponsored National Level Seminar on Challenging Issues on Data Mining Semantic Web, Sri Krishna College of Engineering and Technology, Coimbatore 27th Jan 2012 Jaganadh G Opinion Mining and 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 Project Lead (NLP) 365Media Pvt. Ltd. Coimbatore I am a computational linguist / Linguist and Indologist, Book reviewer Maters Degree Holder in Sanskrit from University of Kerala Jaganadh G Opinion Mining and Sentiment Analysis
- 3. Introduction What other people think!!! Jaganadh G Opinion Mining and Sentiment Analysis
- 4. Introduction Friends and Family Picture Courtesy: http://ianvaleza.com/mlm-secrets-warm-market-approach-strategies/ Jaganadh G Opinion Mining and Sentiment Analysis
- 5. Introduction Survey Picture Courtesy: http://www.oksociety.in/the-guest-for-legitmate-sites-for-paid-surveys/ Jaganadh G Opinion Mining and Sentiment Analysis
- 6. 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 Opinion Mining and Sentiment Analysis
- 7. Introduction Issues with blogs and forums Picture Courtesy: http://www.asunseenontv.com/4-fake-reviews/ Jaganadh G Opinion Mining and Sentiment Analysis
- 8. Introduction Now : Sentiment Analysis Jaganadh G Opinion Mining and Sentiment Analysis
- 9. 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 Opinion Mining and Sentiment Analysis
- 10. Subjectivity Subjectivity Linguistic expression of somebody’s emotions, opinions, sentiment ....... Picture Courtesy: http://www.asunseenontv.com/4-fake-reviews/ Jaganadh G Opinion Mining and Sentiment Analysis
- 11. Subjective Text Sources Social Media Picture Courtesy: http://www.alchemyuk.com/online marketing/social media marketing.php Jaganadh G Opinion Mining and Sentiment Analysis
- 12. Example Review Nokia Lumia 800 Review Courtesy: http://www.techradar.com/reviews/phones/mobile-phones/nokia-lumia-800-1039101/user-review Jaganadh G Opinion Mining and Sentiment Analysis
- 13. The Big Picture Sentiment Analysis Jaganadh G Opinion Mining and Sentiment Analysis
- 14. Basics of Sentiment Analysis Components of Opinion Jaganadh G Opinion Mining and Sentiment Analysis
- 15. Basics of Sentiment Analysis Opinion Definition Jaganadh G Opinion Mining and Sentiment Analysis
- 16. Components of Sentiment Analysis Components Jaganadh G Opinion Mining and Sentiment Analysis
- 17. Approaches Approaches Lexicon based Supervised Learning Unsupervised Learning Keyword Jaganadh G Opinion Mining and Sentiment Analysis
- 18. Issues and Challenges Challenges Picture Courtesy: http://inventionmachine.com/the-Sustainable-Innovation-Blog/bid/51703/Three-Key- Challenges-to-Entering-New-Markets Jaganadh G Opinion Mining and Sentiment Analysis
- 19. Issues and Challenges Challenges Language Domain Spam Named Entity Identification Reliable content Jaganadh G Opinion Mining and Sentiment Analysis
- 20. Questions ?? Jaganadh G Opinion Mining and Sentiment Analysis
- 21. 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 Opinion Mining and Sentiment Analysis
- 22. Finally Jaganadh G Opinion Mining and Sentiment Analysis