鉴于目前用于计算公路网节点重要度的方法主观性较强,本文提出基于粗糙集理论的知识属性约简并结合合理变权的公路网节点重要度测算方法.根据粗糙集理论强大离散数据处理功能,挖掘影响公路网节点重要度各影响因素之间的潜在关系,定量分析节点属性重要性,并确定属性的权值,同时采用变权综合决策的方法来计算公路网节点重要度,进而有效地避免常权在实际应用中忽略了准则之间的重要程度因方案准则的状态不同而发生变化的这一不合理现象.以苏州地区公路网为例,并与其他计算方法相比较,结果表明,该方法能够有效的计算公路网节点重要度,并在处理多节点、影响因素筛选及动态确定权重方面具有明显的优势.%The existing method of node importance in highway network is very subjective; this paper put forward a new method that basing on rough sets and reasonabl variable weight calculate the node importance in highway network. According to rough sets theory powerful analysis function of discrete data, excavate potential relationship in various influencing factors and quantitative analysis of attribute importance, carry on the attribute reduction to get the attribute weights, meanwhile adopt the variable weights synthesizing to calculate node important in the highway network, which can effectively avoid the unreasonable phenomena that we neglecte standards of important degree in the different scheme standards state in practical application . Taking the highway network in Suzhou as the example, and comparing with other computational method, indicate that this method can effectively computate highway network node importance, it has the obvious superiority in processing multiple joint, influencing factor selection and the dynamic weight.
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