The novel coronavirus (COVID-19) pandemic is a major public health emergency and an unprecedented global crisis. Because of Personal Prevention and Protection and social distancing during COVID-19, people had to avoid public spaces and rely more on social media to exchange and to learn information about the pandemic.
With an increased attention on the pandemic, information on social media became richer, had more influences on communities and transmitted with an accelerated rate. Topics and emotions associated with the pandemic events spread and evolved quickly causing societal psychological changes and mood swings.
Using public opinion analysis to understand the concerns, desires and moods of the public is an important foundation for emergency response strategy formulating and adjustment. It plays a significant scientific role in formulating precise and differentiated strategies for all or key areas.
