Deduction Of Crowd Emergency Information Dissemination Strategy Under Emergencies

During an emergency,one of the important factors which have impact on emergency responses is the information spreading between or in the government organizations,news media,and people.For the people inside of the emergency area,especially in the huge diseaseter,those people inside of the emergency area can diffuse the emergency information by being modilized,such as the warnings.In the process of warning people,besides present warning approaches and tools,the social networks composed by those people in the emergency area,can also be used to diffuse the warning.The people in the disease areas can be trained in the emergency preparedness or emergency drills,the warning can be diffused maximumlly if they diffuse the warning using kinds of strategies when they believed it.Then,on the basis of the social networks,which kind of strategies can be used to warn more people in emergencies? In this paper,a deductive method for emergency information spreading strategy of a crowd is proposed based on the complex science,computer simulation,and related knowledge of emergency management,including the method for proposing emergency information spreading strategies and the method for building the emergency information spreading model.The essential idea behind the method for proposing spreading strategies is to evaluate and recognize the influential people in a crowd,and utilize the influences of those people to accelerate the information spreading.How to evaluate and recognize the influential people in a crowd is one of the innovation points of this method.Three ways to evaluate and recognize influential people in a crowd are proposed in this paper.After recognizing those influential people in a crowd,how to fully utilize the influences of those people is the second innovation point of this method.Two ways for utilizing the influences of those people are proposed in this paper.After generating a optimizing strategy,the deduction of the strategy is necessary.An emergency information spreading model is proposed in this paper.In this model,many classical factors and behaviours of emergency information spreading are designed,such as partial spreading,information decay,following-public behaviour,diffusion behaviour,redecision making behaviour,and so on.Two scenarios are build based on this model in this paper,i.e.,the scenario in which there is no outside intervention during the spreading process and the scenario in which the outside intervention is designed during the spreading process.For the above two scenarios,two optimizing strategies are proposed in this paper.The two strategies are made from the perspectives of self-organized spreading and otherorganized intervention,respectively.The model is applied to deduct and verify the efficiencies of the two strategies.In the experiments of this paper,28 synthetic and real crowds that include different structure features are designed.Moreover,the sensitivity of applications of the two strategies under different influential factors are studied in this paper.