Investigation of method for determining factors weights in evaluating slope stability based on rough set theory
Qian Li · Rock and Soil Mechanics · 2009
To compute the weight factors that influence slope stability accurately,rough sets theory is used to analysis the raw data. Based on discretization of the measured data,the significance of attributes among rough sets is estimated instead of weight determination,and a relation data model about slope stability assessment is established. A knowledge system is built through making attribute value into eigenvalue. During data analysis,the weight of a slope stability assessment model is computed by analyzing the support and significance of forecasting method for the predicted object. The proposed approach overcomes the subjectivity of traditional weight determination method,improving the precision of risk assessment for slope stability. At last,an example is given to show the effectivity and rationality of this new method.