[目的/意义]重大突发事件是总体国家安全观的重要组成部分。为了更快速高效地应对重大突发事件，减少其对国家安全、社会稳定以及人民生命财产造成的威胁，提出构建重大突发事件领域的事理图谱，揭示重大突发事件演变的规律与逻辑，可以辅助相关部门对重大突发事件做出应对和决策。[方法/过程]选取国际关注且影响范围较广的2019冠状病毒疫情的媒体报道、研究报告和学术论文等，通过本体构建、事件抽取、事件关系抽取等步骤，构建重大突发事件事理图谱，并对事件演变的事理知识和传导路径进行分析。[结果/结论]研究结果表明，重大突发事件事理图谱可以揭示重大突发事件的演变逻辑与规律，进而从宏观层面把握事件的发展脉络，为重大突发事件的应对与治理提供科学准确的依据。
[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.
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