Abstract
Studies in sentiment analysis and opinion mining have been focused on many aspects related to opinions, namely polarity classification by making use of positive, negative or neutral values. However, most studies have overlooked the identification of extreme opinions (most negative and most positive opinions) in spite of their vast significance in many applications. We use an unsupervised approach to search for extreme opinions, which is based on the automatic construction of a new lexicon containing the most negative and most positive words.
Highlights
After the massive explosion in the use of the Internet and social media in various aspects of life, social media has come to play a significant role in guiding people’s tendencies in social, political, religious and economic domains, through the opinions expressed by individuals
A huge number of studies have been carried in the field of opinion mining and sentiment analysis
The fundamental task in Opinion Mining is polarity classification [1,2,3], which occurs when a piece of text stating an opinion is classified into a predefined set of polarity categories
Summary
After the massive explosion in the use of the Internet and social media in various aspects of life, social media has come to play a significant role in guiding people’s tendencies in social, political, religious and economic domains, through the opinions expressed by individuals. A huge number of studies have been carried in the field of opinion mining and sentiment analysis. The fundamental task in Opinion Mining is polarity classification [1,2,3], which occurs when a piece of text stating an opinion is classified into a predefined set of polarity categories (e.g., positive, neutral, negative). Reviews such as “thumbs up” versus “thumbs down”, or “like” versus “dislike” are examples of two-class polarity classification. An unusual way of performing sentiment analysis is to detect and classify extreme opinions, which represent the most negative and most positive opinions about a topic, an object or an individual. An extreme opinion is the worst or the best view, judgment, or appraisal formed in ones mind about a particular matter
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