Many phenomena show that in a favorable circumstance an agent still has an updating possibility, and in an unfavor- able circumstance an agent also has a possibility of holding its own state and reselecting its neighb...Many phenomena show that in a favorable circumstance an agent still has an updating possibility, and in an unfavor- able circumstance an agent also has a possibility of holding its own state and reselecting its neighbors. To describe this kind of phenomena an Ising model on evolution networks was presented and used for consensus formation and separation of opinion groups in human population. In this model the state-holding probability p and selection-rewiring probability q were introduced. The influence of this mixed dynamics of spin flips and network rewiring on the ordering behavior of the model was investigated, p hinders ordering of opinion networks and q accelerates the dynamical process of networks. Influence of q on the ordering and separating stems from its effect on average path length of networks.展开更多
社交关系网络的复杂性和动态性为观点演化研究带来三大挑战:一是研究者在确定个体的观点交互集合时没有考虑个体的信任阈值,导致观点交互集合的准确性不足;二是现有研究通常忽略了非邻居节点之间的交互对社会群体观点演化的影响;三是现...社交关系网络的复杂性和动态性为观点演化研究带来三大挑战:一是研究者在确定个体的观点交互集合时没有考虑个体的信任阈值,导致观点交互集合的准确性不足;二是现有研究通常忽略了非邻居节点之间的交互对社会群体观点演化的影响;三是现有研究通常基于个体间的观点距离来更新社交网络结构,没有考虑个体间的信任关系对网络结构的影响.为了应对上述挑战,提出一种社交网络中动态信任感知的观点演化模型(Dynamic Trust-Aware Opinion Evolution Model in Social Networks,DTAOE).具体地,首先基于信任传播规则构建出社交群体的信任矩阵;之后,基于引入的信任度阈值和信任矩阵,从邻居节点以及非邻居节点中确定当前个体的信任集合,进而基于信任集合中观点相似的个体更新当前个体的观点;最后,根据个体间的观点距离和信任关系,动态地调整社交网络的拓扑结构.上述演化步骤被重复执行直到群体的观点达到稳定状态.开展了大量的仿真实验,实验结果证明了DTAOE模型的有效性和合理性,并揭示了网络结构和信任关系对观点传播的影响机制.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.11304123)the Scientific Research Foundation of Jianghan University(Grant No.2010014)
文摘Many phenomena show that in a favorable circumstance an agent still has an updating possibility, and in an unfavor- able circumstance an agent also has a possibility of holding its own state and reselecting its neighbors. To describe this kind of phenomena an Ising model on evolution networks was presented and used for consensus formation and separation of opinion groups in human population. In this model the state-holding probability p and selection-rewiring probability q were introduced. The influence of this mixed dynamics of spin flips and network rewiring on the ordering behavior of the model was investigated, p hinders ordering of opinion networks and q accelerates the dynamical process of networks. Influence of q on the ordering and separating stems from its effect on average path length of networks.
文摘社交关系网络的复杂性和动态性为观点演化研究带来三大挑战:一是研究者在确定个体的观点交互集合时没有考虑个体的信任阈值,导致观点交互集合的准确性不足;二是现有研究通常忽略了非邻居节点之间的交互对社会群体观点演化的影响;三是现有研究通常基于个体间的观点距离来更新社交网络结构,没有考虑个体间的信任关系对网络结构的影响.为了应对上述挑战,提出一种社交网络中动态信任感知的观点演化模型(Dynamic Trust-Aware Opinion Evolution Model in Social Networks,DTAOE).具体地,首先基于信任传播规则构建出社交群体的信任矩阵;之后,基于引入的信任度阈值和信任矩阵,从邻居节点以及非邻居节点中确定当前个体的信任集合,进而基于信任集合中观点相似的个体更新当前个体的观点;最后,根据个体间的观点距离和信任关系,动态地调整社交网络的拓扑结构.上述演化步骤被重复执行直到群体的观点达到稳定状态.开展了大量的仿真实验,实验结果证明了DTAOE模型的有效性和合理性,并揭示了网络结构和信任关系对观点传播的影响机制.
