计算机科学 ›› 2021, Vol. 48 ›› Issue (7): 124-129.doi: 10.11896/jsjkx.200600096
谭琪, 张凤荔, 王婷, 王瑞锦, 周世杰
TAN Qi, ZHANG Feng-li, WANG Ting, WANG Rui-jin, ZHOU Shi-jie
摘要： 在社交网络中,通过追踪极少数的强影响力用户,可以实现宏观管控信息的传播过程,而用户影响力是一种无法预判的后验信息,仅能依靠有关特征来确定。因此,提出了一种融入结构度中心性的社交网络用户影响力评估(Structural-Degree-Centrality User Influence Rank,SDRank)算法来识别强影响力用户。该算法基于PageRank算法,引入了结构度中心性,结合了加入时间与平均转发数的调节因子,进而计算出用户的影响力值。相较于其他的现有算法,SDRank算法仅从用户本身的行为角度出发,不需要诸如个人标签、粉丝等存在伪造风险与缺省可能的具体信息,也不必挖掘传播内容的潜在信息,适用性更广泛。以微博用户的级联转发数据集作为实验对象,对被转发数排名Top-K用户的平均转发数等相关结果进行了可视化分析,探讨了用户转发行为在社交网络信息传播中的作用。在实验过程中,所提算法与PageRank,TrustRank算法相比,准确率、召回率和F1-measure值都有了一定的提高,验证了SDRank算法的有效性。
中图分类号:
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