The Situation Ordered Structure of IDO Connection Degree and ITS Application

Because the decision maker has three preferable levels to their decision. They are "completely satisfactory", "completely negative" and "uncertainly satisfactory". Then the "certain-uncertain" system for the decision-making space is formed. Firstly, this paper builds up the IDO connection degree of decision-making expression based on set pair analysis; secondly, the IDO situation ordered structure in decision-making system is set up according to the decision situation; thirdly, the decision-making method is given based on the IDO situation ordered structure, which is more scientific and more applicable to the practice; finally, the method is applied to both-branch fuzzy decision-making. Both-branch fuzzy decision-making and its factor fields are ordered separately according to the situation; in the meantime, the dynamic situation is analyzed so as to judge the stabilization of the both-branch fuzzy decision-making