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. 2021 Mar 17;9:44162–44172. doi: 10.1109/ACCESS.2021.3066242

TABLE 2. Network Public Opinion Warning Index System for Major Emergencies.

First-level Second-level
Attention Search
Media
Media release
Participation Original tweet
Comment and retweet
Thumb up
User influence
Diffusion Change in search
Change in original tweet
Change in comment and retweet
Change in thumb up
Status Visual
Authenticity