The Joint DoD and CIA Security Commission propose to bring fuzzy set theory to the area of information security, which can provide rigorous methods to handle many possible degrees of security[4].

• DoD(美国国防局)和CIA(中央情报局)安全协会共同提出将模糊集合理论引入信息安全领域,它可以提供严密的方法来处理许多可能的不同程度的安全问题;