An Evolution Model of Emergency Based on Analysis of Snowstorm in South China
As the emergency evolutes, its hazard enlarges, such as Snowstorm in south China in Jan. 2008. It is of great significance for early-warning to study the evolution process of Snowstorm. This paper proposes a method to obtain the evolution model of SnowstorM from news reports. Firstly, news reports from special reports of Snowstorm at Sina are selected as a major data source which includes more than 4, 000 pieces of news. Secondly, based on the results of statistics and clustering in which self-organizing map neutral network (SOM) is adopted, we analyze the evolution process of Snowstorm in the viewpoint of time and area. Three key matters of Snowstorm are proposed, and evolution of key matters is depicted through two time indexes. The similarities and differences among different areas are also discussed. The result of this study is useful for early-warning and dealing with similar emergencies.
emergency snowstorm news reports statistics SOM network evolution process
Zhang Jiyong Rong Lili Guo Tianzhu
Institute of Systems Engineering, Dalian University of Technology, Dalian, China
国际会议
广州
英文
89-96
2008-12-11（万方平台首次上网日期，不代表论文的发表时间）