Abstract
Objectives: To extract the knowledge from social media and other review sites of importance. Methods/Analysis: Analyzing such a huge amount of data to summarize the opinion out of that text is a hot research field. In this study, a systematic literature review is done to summarize the various works that are carried out in this field. Findings: In this survey, the various methods used for sentiment analysis, its applications and the challenges are summarized in order to give an overall view of sentiment analysis. Novelty/Improvement: This valuable information is used in evaluating the opinion that could be used by business organizations and other text mining entities.
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