Rough Set Decision Making Model based on Dominance Grey Degree

摘要

In order to deal with decision making system with preference and grey information, acquire the key factors of decision-making, and extract group decision making rules and sort the decision making schemes, a novel rough set model is developed. In this paper, based on thought and methodology of grey system, some concepts such as dominance grey degree and comprehensive dominance degree are defined, and then the dominance relationship based on dominance grey degree is exploited to substitute the equivalence relationship of rough set, so that the rough set decision making model based on dominance grey degree is established. Finally, an example of the performance evaluation problem of artillery weapons illustrates the validity and practicability of the proposed model.