| 基于改进Hegselmann-Krause模型的微博舆论反转研究 |
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| 引用本文： | 陈一新,陈馨悦,吕妍,韩铁奎,徐扬.基于改进Hegselmann-Krause模型的微博舆论反转研究[J].情报理论与实践,2020,43(1):82-89. |
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| 作者姓名： | 陈一新 陈馨悦 吕妍 韩铁奎 徐扬 |
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| 作者单位： | 北京大学信息管理系,北京 100871;北京大学信息管理系,北京 100871;北京大学信息管理系,北京 100871;北京大学信息管理系,北京 100871;北京大学信息管理系,北京 100871 |
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| 摘 要： | 为探究舆论反转的机制,减少舆论反转造成的危害,文章基于Hegselmann-Krause模型,引入有向无标度网络并确定衡量节点中心性的"综合中心性"指标,得到改进Hegselmann-Krause模型。利用模型,通过意见领袖观点值改变刻画舆论反转,对舆论反转现象进行描述与分析,并通过对具体案例的模拟,检验模型的有效性,探究意见领袖数量及观点变化强度对舆论反转的影响。结果表明,意见领袖数量越多,意见领袖的观点变化越弱,群体观点越快达到稳定,稳定后群体观点值越一致且平均观点值越接近意见领袖的观点。
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| 关 键 词： | 微博 Hegselmann-Krause模型 有向无标度网络 舆论反转 意见领袖 |
Research on Public Opinion Reversal on Micro Blog Based on Improved Hegselmann-Krause Model |
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| Abstract: | In order to explore the mechanism of public opinion reversal and reduce the negative effect caused by the reversal,this paper introduces the directed scale-free network and determines the"comprehensive centrality"index to measure the centrality of the node,and thus constructs the improved Hegselmann-Krause model. By using the model to describe the reversal of public opinion through the change of opinion leader’s point of view,this paper describes and analyzes the phenomenon of public opinion reversal,tests the validity of the model through simulations of specific cases,and explores the influence of the number of opinion leaders and the intensity of opinions on public opinion reversal. The results show that the more opinion leaders,the weaker change of their opinions,the faster the group views reach stability andthe more consistent the group views,and the average opinion value is closer to the opinions of opinion leaders. |
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| Keywords: | micro blog Hegselmann-Krause model directed scale-free network public opinion reversal opinion leader |
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