A Review on Twitter Data Sentiment Analysis Related to COVID-19

On March 11, 2020, Dr. Tedros Adhanom Ghebreyesus, Director-General of the WHO, pronounced the outbreak a pandemic. The term “pandemic” refers to a disease that spreads rapidly and engulfs an entire geographic region. Coronavirus is a brand-new viral disease named after the year it first appeared. There is a scarcity of academic research on the subject to help researchers. Social media content analysis can reveal a lot concerning the general temperament and mood of the human race. In the field of sentiment analysis, deep learning models have been widely used. Sentiment analysis is a set of techniques, tools, and methods for detecting and extracting information. People have been using social networking sites like Twitter to voice their opinions, report realities, and provide a point of view on what is happening in the world today. Folks have always used Twitter to share data about the COVID-19 pandemic. People randomly share data visualizations from news revealed by organizations and the government. The numerous studies surveyed are selected based on a similarity. Every paper which is supervised performs sentiment analysis of Twitter data. Various studies have made used a fusion of diverse word embedding’s with either machine learning classifiers or deep learning classifiers. Albeit the interpretation of single classifiers is satisfactory, the studies those proposed hybrid models have shown outstanding performance. On top of that transformer based models demonstrated quality results. It is concluded that using hybrid classifiers on Twitter data for sentiment analysis can surpass the achievements of the single classifiers.