面向地震应急制图需求的用户建模研究

User Modeling Researchfor Earthquake Emergency Mapping Requirements

针对灾害应急情况下的制图需求进行用户建模研究有助于提高灾前应急能力、灾中救灾效果和灾后恢复重建效率.以地震灾害为例,根据地震灾害中用户、时间阶段、场景的分类,对向量空间模型进行改进;在分析地震灾害中各类用户感兴趣的历史文本的基础上,通过对地震灾害有关特征词提取和权重计算,获取不同用户在地震灾害发生前、中、后期不同时间阶段,用户对关于地震灾害特征词信息的兴趣度,建立面向应急制图需求的地震灾害的向量空间模型,在此基础上利用场景特征词匹配对应的应急制图需求,使用户信息需求转化为应急地图需求进而进行用户推荐.并通过实验证明模型得到的用户兴趣度结果较符合人们的直观认知,对应急救灾制图具有一定的指导作用.

Research on user modeling for mapping needs in disaster emergency situations is helpful for improving emergency response capabilities,disaster relief effectiveness,and post-disaster recovery and reconstruction efficiency.Taking the earthquake disaster as an example,an improved vector space model is proposedaccording to the classification of users,time phases and scenes in earthquake disasters.Based on the analysis of historical texts that various users interested in earthquake disasters,through feature word extraction and weight calculationfor earthquake disasters,users′interest in information about the characteristic word of the earthquake disaster at different time periods that before,during and after the earthquake disaster can be obtained,and a vector space model of earthquake disasters for emergency mapping requirements is established as well.On the basis of this,the corresponding emergency mapping requirements is matched with the scene feature words,so that the user information needs can be transferred into emergency map requirements,consequently,further user recommendations are made.The experimental results of user′s interest degree obtained by the model are proved to be in line with people′s intuitive cognition,which has certain guiding significanceon emergency mapping.