Optimal Location of Storage Tanks Based on Game Theory Weighting GRA-TOPSIS

Abstract:

After constructing the index system of urban waterlogging risk assessment， the idea of game theory （GT） was used to combine the subjective weight obtained by the analytic hierarchy process （AHP） and the objective weight obtained by the improved entropy value method （IEVM）. The quantitative evaluation framework was established by combining the grey relation analysis （GRA） with the technique for order preference by similarity to ideal solution （TOPSIS）， and finally the location of the storage tanks was determined by the relative closeness of each node. It is shown that the coefficient of variation of the comprehensive value from GRA-TOPSIS is 0.628， higher than that from GRA or TOPSIS alone， which is more conducive to the identification of waterlogging risk at each node. In addition， the method can eliminate the risk of urban waterlogging and improve the standard of urban waterlogging prevention.