  Modern social media networks have become an important platform for
information competition among countries, regions, companies and other parties.
This paper utilizes the research method of spread dynamics to investigate the
influence of the control role of announcements in social networks on the
spreading process. This paper distinguishes two spreading phases using the
authentication intervention as a boundary: the unconfirmed spreading phase and
the confirmed spreading phase. Based on the actual rules of spreading in online
social networks, two kinds of verification results are defined: true
information and false information. The Two-stage information spreading dynamics
model is developed to analyze the changes in spreading effects due to different
validation results. The impact of the intervention time on the overall spread
process is analyzed by combining important control factors such as response
cost and time-sensitivity. The validity of the model is verified by comparing
the model simulation results with real cases and the adaptive capacity
experiments. This work is analyzed and visualized from multiple perspectives,
providing more quantitative results. The research content will provide a
scientific basis for the intervention behavior of information management
control by relevant departments or authorities.
