Study of Weight Determination Based on Rough Set Theory in Desulfuration Projects Decision

Rough Set Theory could availably analysis and the processing the incomplete information problems. Cited the rough set theory into desulfuration projects decision, through the analysis and extraction of each desulfuration method evaluation index, and according to the importance index of each desulfuration method evaluation index to the order of alternatives is sorted to get thus consistent and completed decision rule. This method based on the actual application background, combined the objective weight and the subjective weight which is decided by the experts´ experience knowledge to assured the final weight value. This method makes up for the shortness of the subjective weight decided by the experts´ experience knowledge. Through the study of actual application based on rough set theory, confirmed the rationality and feasibility of the rough set theory that used in the decision making of desulfuration projects.