Sentiment Analysis on Product Reviews

Sentiment Analysis is a process of analyzing and categorizing the emotion or sentiment over any given review or text piece in order to know what the reviewer wants to express in the form of positive, negative or neutral. Today, people are highly interested in buying things online from any e-commerce site or they search for a product review in order to know the quality and one's perception toward that product before buying. The product provider also gets to know about the user's opinion over a product. This can help the company to improve its marketing strategy and quality of product in their favor. Sentiment analysis uses various semantic approaches like on these online reviews to extract as much feature it can and categorize the type of opinion. Some techniques also help in rating the product value based on user's opinion. This paper is a literature survey including various authors and their sentiment techniques on product or online review.