Subjects: Library Science，Information Science >> Library Science submitted time 2023-07-26 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] In order to prevent the outbreak of micro-blog false public opinion to the serious consequences of society, the paper categorized the key nodes in micro-blog, to stop the nodes that maliciously incite the masses' emotions in time, and prevent more micro-blog users from being misled, and guide the micro-blog users by different ways of thinking. So as to better purify the micro-blog public opinion environment. [Method/process] The paper used super network and dynamic network analysis method to identify key nodes. Through analyzing their sentiment tendency, different leading strategies were finally provided. [Result/conclusion] There are five kinds of key nodes in the life cycle of micro-blog public opinion. Ideological guidance can be divided into intelligent guidance and wisdom guidance.
Subjects: Library Science，Information Science >> Library Science submitted time 2023-07-26 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] Exploring topical communities and sentiment fluctuations of Internet users and grasping the process of development of events have great significance to control the development direction of the events and lead guidance of the network public opinion in the new period. [Method/process] Based on the theory of complex networks, the study constructed sub event network based on co-occurrence relations among user comments, identifying topic community in sub-event commenting networks through community discovery algorithms and giving the attribute to emotion word according to the emotional dictionary. The study dynamically tracked the opinions and emotions of Internet users based on the evolution process of events. [Result/conclusion] The conclusion showed that the commenting network community discovery and coefficient of variation method can effectively measure the scale and concentration of Internet users' topic discussion; emotional word sentiment classification attribute method can reflect the emotional changes of Internet users in the process of event evolution; the derived topic of public opinion has a continuous influence on the development of the event public opinion; the content of the topic discussion of Internet users has some foresight to the evolution of the event.
Subjects: Library Science，Information Science >> Information Science submitted time 2023-04-01 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/significance] Major emergencies are an important part of the overall national security concept. In order to respond to major emergencies more quickly and efficiently and reduce the threats to national security, social stability, and people's lives and properties, this article proposes to construct major event knowledge graph, it reveals the law and logic of the evolution of major emergencies, and can assist relevant departments in responding to and making decisions on major emergencies.[Method/process] This paper selected media reports, research reports and academic papers of the COVID-19 epidemic that had a wide range of international attention and influence, and used ontology construction and pattern matching methods for event extraction and event relationship extraction, to construct an affair map of major emergencies, and to analyze the affair knowledge and transmission paths of the evolution of the event.[Result/conclusion] The research results show that the affair map of major emergencies can reveal the evolution logic and laws of major emergencies, and then grasp the development context of events from a macro level, and provide scientific and accurate basis for the response and management of major emergencies.
Subjects: Library Science，Information Science >> Information Science submitted time 2023-04-01 Cooperative journals: 《图书情报工作》
Abstract： [Purpose/Significance] In order to respond to major emergencies more quickly and efficiently, this paper conducts a study on the dynamic evolution process of major emergencies, with a view to assisting relevant departments in responding to and making decisions on major emergencies.[Method/Process] Based on the theory and method of event knowledge graph, this paper obtained the abstract event knowledge graph of major emergencies through the steps of event knowledge graph construction, event generalization, etc, and further analyzed it to summarize the motivation of event evolution, combined with the system dynamics model, the dynamic simulation model of the event evolution was carried out.[Result/Conclusion] The research results show that highly generalized knowledge can reveal the causes and influencing factors of event evolution; With the combination of major emergencies event knowledge graph and system dynamics method, the process of simulating the evolution of events is achieved from the perspective of knowledge.
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