Disaster Risk Index Assessment Considering Subjective and Objective Weights and Emergency Communication Technologies

To assist Emergency Communication companies in making decisions, it is necessary to assess the potential risks of natural disasters in a region and the possible losses to people and property. Therefore, a disaster - risk index assessment model is established. Firstly, this model evaluates the disaster risks of a region from four aspects: natural disasters, economic development level, environmental stability, and national aid. Secondly, for this model, the methods of index standardization and weight determination are described in detail, and a combination of subjective and objective methods is used to determine the weights of the indicators. Finally, to verify the effectiveness of the model, the data of 40 countries are input into the model, and the Disaster Risk Index (DRI) of each country is calculated by the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS).