Research on method of case representation and retrieval in emergency aid decision-making

Focusing on a discussion about how to make emergency decisions after the occurrence of emergent events,a representation method based on XML is proposed based on the hierarchical structure of emergency cases,which can solve the unified representation problems of the heterogeneous emergency cases.A two-layer case retrieval algorithm combining structure similarity and attribute similarity is designed,which can effectively overcome the shortcomings of traditional nearest neighbor algorithm that fails to calculate the similarities between the cases with the missing values.Finally,the application of case retrieval algorithm to typhoon analysis is used to illustrate the practicality of case-based reasoning(CBR)approach in emergency aid decision-making,which is testified a scientific and effective aid decision-making method for the emergency officials.