  During the special period of the COVID-19 outbreak, this project investigated
the driving factors in different information diffusion modes (i.e. broadcasting
mode, contagion mode) based on the nomination relations in a social welfare
campaign on Weibo. Specifically, we mapped a nomination social network and
tracked the core communicators in both modes. Besides, we also observed the
network from perspectives such as relationships between core communicators and
modularity of the whole network. We extracted 6 homophily factors and tested
them on 2 representative communities within the largest component of the
network. We found that some core communicators distributed in a co-dependent
way. At last, we supposed several explanations to the phenomenon which can be
explored in further research.
