A Survey on Opinion Mining

The number of customer reviews has been increased in the recent years with the popularity of e-commerce and social media. There are many social networks in which people tend to express their personal opinion. Reviews on products help the new user to know well about the product. It helps the customers to choose the best products based on the reviews. At present, there are huge amount of opinions available in the review sites, blogs, forums etc., when the number of opinions or reviews increase to large amount, it becomes difficult to go through all the reviews and get a clear idea. Hence it is essential to summarize the opinions and provide a clear and general view for quick and better understanding. Opinion mining is the art of extracting useful opinions. This paper presents a survey on opinion mining, the techniques used and the challenges faced.