Double-fuzzy system Vague System is generalized with Vague information analysis, Vague ratiocination and control, Vague synthesized adjudicate, Vague gater and mode identify, Vague decision and Vague matching.

• 本文概括了双模糊系统Vague System,对Vague信息分析、Vague推理与控制、Vague综合评判、Vague聚类与模式识别、Vague决策和、Vague匹配分别进行了综述。