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中文摘要：
为了更有效地分析客户需求,充分表达客户的真实感知,在分析现有需求权重确定方法的基础上,对原有粗数方法进行改进。重新定义了粗数,明确属性粗数和对象粗数的概念,并对粗数的新老定义进行对比分析;通过设定粗数下限阈值和粗边界阈值对需求项目进行约简,并提出将粗数的区间权重转变为单值权重的原则;以某款全自动洗衣机的改进为例,对粗数方法和相关原则进行验证。改进后的粗数方法实现了约简功能,相对直接求平均值得到的权重更能反映客户的真实感知。
英文摘要：
To analyze customer requirements more effectively and express customers＇ perception more thoroughly,the method of rough number was improved and redefined with analysis of current approaches in determining weight of customer requirements.Both concepts of attribute rough number and object rough number were determined,and the new definition of rough number was compared to the old one.The demand items was simplified by setting lower limit threshold and rough boundary threshold of rough number.Furthermore,the principle of rough number＇s interval weight converted to single value weight was proposed.With the case study of automatic washing machine＇s improvement,the method and the relevant principles of rough number were verified.The reductions of improved method were realized and more closed to customers＇ perception with comparing to the weights obtained by average directly.
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