基于Hypergraph的突发事件情景案例表示与检索方法研究

Research on Method of Emergency Scenario Case Representation and Retrieval Based on Hypergraph

[研究目的]突发事件具有情景演化特征,突发事件案例不仅要对单个情景特征进行描述,也要描述不同情景之间的演化关系。[研究方法]在对突发事件情景演化机理和情景案例特征分析基础上,引入超图理论,将其应用于突发事件情景案例表示,建立了突发事件情景链超图模型,并基于该模型提出了包括情景链检索和情景特征检索的两阶段检索策略和相应的相似度计算方法。[研究结论]该模型能够有效描述突发事件情景案例的复杂演化特征,并能提高案例检索的质量和效果。

[Research purpose]Emergencies have the features of scenario evolution.For emergency cases,we should not only describe the characteristics of a single scenario,but also describe the evolutionary relationship between different scenarios.[Research method]Based on the analysis of the evolution mechanism of emergency scenarios and the characteristics of scenario cases,the hypergraph theory is introduced and applied to the representation of emergency scenario cases,and the hypergraph model of emergency scenario chain is established.Based on this model,a two-stage retrieval strategy including scenario chain retrieval and scenario feature retrieval and the corresponding similarity calculation method are proposed.[Research conclusion]The model can effectively describe the complex evolution characteristics of emergency scenario cases and improve the quality and effect of case retrieval.