Flood Season Division Based on Improved Set Pair Analysis

Peng-lin WU, Jun LI, Jing-yi WANG


For the complex theory and the large amount of calculation of traditional flood season staging method, the set pair analysis method is proposed. In the same time, the indexes of traditional set pair analysis are regarded as the same faults in the process of the flood season staging. In order to overcome this shortcoming, variation coefficient method is used to calculate the weights of indicators, to improve the traditional set pair analysis method. Taking Chenjiawan reservoir as an example, we use the improved set pair analysis method for flood season staging, and compare the results with fuzzy set analysis method and set pair analysis method. The results indicate that the improved set pair analysis method is reliable and suitable for flood season staging.


Improved set pair analysis, Variation coefficient method, Flood season division, Chenjiawan reservoir.


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