一、确定功能评价值中存在的问题 “功能评价”是当前存在问题较多的部份。根据功能数量化的形式不同,功能评价可以分为两大类:功能成本法和功能评分法,本文在这里将要讨论功能成本法的一些问题。 功能成本法就是用功能评价值表示功能大小,然后与功能目前成本进行比较,确定原有对象需要改进的功能区域。其一般公式为: First, determine the problems in the evaluation of the function “Functional evaluation” is the current part of the more problems. According to the different forms of functional quantification, functional evaluation can be divided into two categories: functional cost method and functional scoring method. This article will discuss some issues of functional cost method. The functional cost method is to use the function evaluation value to express the function size, and then compare it with the current cost of the function to determine the functional area that the original object needs to be improved. Its general formula is: