Research on DEMATEL method based on three-parameter interval grey number and its application

The decision-making trial and evaluation of laboratory method (DEMATEL) can effectively analyze the relationship between the intrinsic factors of complex systems, so it is widely used in many fields. In this paper, based on a new ordered weighted average operator of three-parameter interval grey number (TPIGN-OWA), a novel DEMATEL model is given, which has three advantages: The first one is that the three-parameter interval grey number (TPIGN) can reflect the real intention of the decision maker more than the interval grey number. The second one is that the new TPIGN-OWA takes into account the weight of the two intervals assembly, thus, the intention of experts can be more accurately expressed. The last one is that in the decision-making process, it is not necessary for the decision-maker to have strong mathematical knowledge background, but only to give the corresponding TPIGN according to the scale of the importance of factors, which is easier for the decision-maker to operate. Finally, this method is applied to the evaluation of fire safety management, and its the effectiveness and practicability is verified.