Before revision:  Using sentiment feature analysis and topic modeling, we reveal substantial differences between the use of the controversial terms such as "Chinese virus " and that of the non-controversial terms such as "COVID-19" . For example, tweets using controversial terms contain a higher percentage of anger as well as negative emotions.
After revision:  Using sentiment feature analysis and topic modeling, we reveal substantial differences between the use of the controversial terms such as "Chinese virus " and "COVID-19" . For example, tweets using controversial terms contain a higher percentage of anger as well as negative emotions.