Research on Multi-attribute and Group Decision-making Method with Unknown Weight

Different attributes and weights of decision-makers are the key information of multi-attribute and group decision making. Aiming at the complete unknown problem of attribute and decision-maker's weight information, this paper proposed a weight calculation method based on triangular intuitionistic fuzzy number, which established a consensus model with reference triangular intuitionistic fuzzy information by similarity degree to calculate attribute and decision-maker weight information. Aiming at the partially unknown problem of attribute and decision-maker's weight, based on the consensus model, linear programming method is used to calculate the attribute and decision-maker's weight information. Combined with the method of TODIM decision based on triangular intuitionistic fuzzy information, it can be applied to scientific decision making in modern enterprise management in many application scenarios, such as known, partially unknown and completely unknown attribute and decision-maker weight.