Improvement and Application Analysis of the Comprehensive Grade Evaluation Model of Typhoon Disaster
This paper firstly discusses about the improvement of typhoon disaster comprehensive evaluating model established by Wang Xiurong et al. in 2010. First, the function optimization of damaged buildings index is redefined; second, the influence of inflation on the direct economic loss index is wiped off; third, the weight coefficient of four indicators is optimized, including the death toll of the original model, the direct economic loss, the number of damaged houses, and the flooded crops area. In the second part of this paper, the improved model is used to evaluate the historical typhoon disasters in China from 2000 to 2015 comprehensively and sort all the historical typhoon disasters from high to low based on the results. At the same time, the results are compared with the original model to evaluate the effectiveness of the improved model. Finally, the application and test analysis prove that the improved evaluation model highlights the peopleoriented concept of disaster prevention, reducing the impact of inflation on the direct economic loss index. Compared with the original model, it has a better level of recognition, and its assessment of disaster grade results is more in line with the actual disaster, having a good evaluation function. Thus, it could be applied to relevant operations of meteorological services to quickly evaluate the typhoon disaster comprehensive grades or historical sorting.