Fuzzy and grey are the double-characters of the information in supportability assessment and the fuzzy whitenization and grey incidence are effective method use in modern engineering realm.

• 保障性评价中的信息往往具有模糊性和灰色性双重特征,而模糊白化和灰色关联是现代工程领域解决数据不确定性和数据量不足问题的有效方法。