Interactive group decision model and its realization for security investment of information system
信息系统安全评估的交互式群决策模型及实现

Based on the research of disadvantages of assessment methods in information system security a systemic interactive group decision making method are proposed. In this model, applied multi-steps interactive procedure for evaluating, selecting, ranking and approximating group ideal point step by step. In addition, designed the parameters of group satisfaction degree were to weigh group consensus and control the procedure; thus, gave out the order of alternatives out conveniently. Finally an application example is given to show rationality and effect of the method in solving the kind of less-structured and non-complete information assessment problem and a realistic technical frame of group decision support system can been built.