所谓层次分析法，是指将一个复杂的多目标决策问题作为一个系统，将目标分解为多个目标或准则，进而分解为多指标的若干层次，通过定性指标模糊量化方法算出层次单排序和总排序，以作为目标、多方案优化决策的系统方法。
Multiple evaluation attributes: Before group decision making， the decision maker must first measure the number of feasible attributes and propose several related attributes that affect the scheme. The attributes can be independent or correlated.
