【摘要】 基于网络论坛中用户行为的异质性和病毒传播的SEIR模型,提出了面向网络论坛的SEIR谣言传播模型。首先根据模型在非均匀网络中的平均场方程,推导网络论坛中谣言传播的临界阈值,表明在谣言传播率有限的情况下,增加用户间的信任机制可以有效抑制谣言在网络中的传播;然后通过仿真与数值分析,验证模型的有效性以及信任机制的引入能够有效降低谣言的影响力、传播速率和影响范围;最后结合仿真与数值分析的结论和网络论坛用户间的高影响力有限信任关系,给出了抑制谣言传播的高影响力用户免疫策略。实验结果表明,该策略与传统的免疫策略相比能够取得更好的谣言抑制效果。更多还原

【Abstract】 A rumor spreading model for the web forum based on the heterogeneity of web forum user behaviors and SEIR model is proposed in this paper.First,according to the mean-field equations of the model on inhomogeneous networks,the critical threshold of the spreading of rumor is deduced,the result of theoretical analysis shows that the increase in trust mechanism between users can effectively inhibit the rumor spread in the network with limited velocity of propagation;Then the simulation and numerical analysis of the model itself and the influences of trust mechanism to the model is given,which verify the validity of the model and the introduction of trust mechanism can effectively reduce the rumor influence,the velocity of rumor spreading and the rumor size;Finally,combined with the previous conclusions and the high-influence limited trust relationships between web forum users,a high-influence immunization strategy is given.The experimental results show that the strategy able to reach better effect than traditional immunization strategy.更多还原