功能优序模型及在价值工程中的应用

功能评价方法常采用功能成本法和功能指数法。功能指数法是通过评定各功能的重要程度。用功能指数来表示其功能程度大小，然后与相应成本指数进行比较计算出价值指数，用以评价方案的优劣或改进对象的成本。如果运用二元模糊对比关系，首先求出功能对比所占的权重，然后再引入熵的技术，作为功能优序评价模型来计算功能评价指数，就更能反映事物本身的客观规律性。章最后。运用实例进行了分析，得出的结论证明该模型是有效的、客观的。

Function Sequence Optimization Model and Its Application in Value Engineering

Function evaluation methods usually include function cost method and function index method. The function index method uses the function index to reflect the function through evaluating the importance of functions, and then calculates the value index with the relative cost index to evaluate the scheme. If the dualistic fuzzy comparison is used to calculate the weights of functions, and then the entropy technology is used to establish the function sequence optimization model to get the function evaluation index, the objectivity will be more clearer. An example is given to prove the effectiveness of the model.