The Weights Allocation Of Geological Disasters Impact Factor Based On Fuzzy-Rough Set

The happiness of geological disaster is often the consequences of the various factors andstudies the role of that is helpful to predict or prevent the occurrence of geological disasters.But the investigation of the geological disaster information is often not complete and can notreveal all the factors leading to geological disaster and is also unclear to the mechanism of thedisaster. In the model of the geological disaster areas, the weighing values of influence factorsof geological disasters will directly influence the division of the accuracy and validity.Therefore how to determine the weight of geological disaster areas influence factors is one ofthe key problems and also is difficult.Weight distribution method of geological disaster areas can be summarized as subjectivejudgment and objective analysis. Due to the incompletion of geological disaster factors, theobjective analysis methods are short of data support and subjective judgment method is moreinfluence by human factors. In view of the above questions, it uses fuzzy rough set which hasa advantages of handling uncertainty and integrity of the information and puts forward a newfuzzy rough set model based on weight distribution method. First the project "The monitoringand prediction technology research for geological disaster in western region highway"provides the classification properties data of extraction geological disaster to build a geologichazard information classification decision table. Then it blurs attribute values by using fuzzyset theory to form the fuzzy equivalence class and on the basis of fuzzy rough set modelcalculates the condition attributes for decision attribute of dependency, after the normalizedprocessing getting the selected geological hazard factors weights. Finally take Sanhui-Kailihighway as an example, using the factor superposition method of geological disaster areasmodel weights allocation results are accuracy evaluation analysis. The results show that thefuzzy rough set model methods division results section clearly and its disaster pointsconcentration distribution in the pitch in high-risk actual suits perfectly and the expertsscoring method of division results section rough disasters point is mainly distributed in thelow, medium and high levels.The research above shows that the fuzzy rough set model can effectively solve theweight distribution of geological disaster impact factor. The impact factor weight distributionbased on fuzzy rough set of geological disasters is a kind of effective distribution methodwhich can improve the precision of the weight distribution.