Research on Event Graph of Major Emergencies in the Context of Cyber-Physical-Social Ternary Space
[Purpose/Significance]It proposes an event graphic model of major emergencies that integrates ternary spatial big data,aiming to support the full-element,full-process,and full-range knowledge representa-tion of major emergencies.[Method/Process]Firstly,it defined the meaning and type of event picture from the concept of world picture,and constructed a generalized event graph model,which could be used to connect the knowledge in different abstraction levels and carry a multidimensional event picture.Secondly,it explored the evolution process of major emergencies in the cyber-physical-social space.From the process of things move-ment and information dissemination,it revealed the cross-space evolution mechanism of major emergencies,and constructed the model.Finally,it constructed its event graph model based on the evolution model.[Result/Con-clusion]In terms of knowledge representation,the event graph of major emergencies can not only describe the evolution process of events in the ternary space and reveal the evolution mode of that,but also present the state of physical,social and cyberspace elements and their interactions,and the intrinsic dynamics of event evolution.In terms of knowledge organization,the event graph of major emergencies can integrate the key information in the ternary space,connect the fragmented knowledge,and present a tridimensional or multidimensional event picture.
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