Opinion Mining and Sentiment Analysis - Challenges and Applications

People’s opinions and experience are very valuable information in decision making process. Now a days several websites encourage users to express and exchange their views, suggestions and opinions related to product, services, polices, etc. publically. The increased popularity of these sites resulted huge collection of people opinion on the web in much unstructured manner. Extracting the useful content from these opinion sources becomes a challenging task. This situation created a new area of research called opinion mining and sentiment analysis. Opinion mining and sentiment analysis extract and classify the people’s opinion automatically from the internet. This paper discusses various application and challenges related to the Opinion Mining and Sentiment Analysis.