关键词: 区块链, 社交网络, 信息传播, 传染病模型, 稳定性, 敏感性

Abstract:

The emergence of blockchain has changed the mode of social network information propagation, such as user trust and the forwarding probability of information propagation. Therefore, on the basis of the traditional social network information propagation model, by focusing on the analysis of user behavior patterns, firstly, the forwarding probability is optimized based on user trust and economic incentives. Secondly, a contract status node is added to explain the user’s rationality, based on this, it proposes a blockchain social network information propagation model. Finally, Theoretical analysis and simulation results show that the model has better stability and sensitivity in the information propagation process of the blockchain social network, and the node attribute change trend is closer to the real network. So, it can better simulate the spread of information in the social network in the blockchain environment.

Key words: blockchain, social network, information propagation, epidemic model, stability, sensitivity