交通运输系统工程与信息

交通运输系统工程与信息 ›› 2005, Vol. 5 ›› Issue (6): 78-81 .

• 系统工程理论与方法 • 上一篇    下一篇

主成分分析法在公路网节点
重要度指标权重分析中的应用

罗志忠，张丰焰   

  1. 长安大学公路学院，西安 710054
  • 收稿日期:2000-05-31 修回日期:1900-01-01 出版日期:2005-12-25 发布日期:2005-12-25

Application of Principal Component Analysis Method
in Calculating the Weights of the Indexes of
the Highway Nodes’ Importance

LUO Zhi –zhong, ZHANG Feng-yan   

  1. College of Highway, Chang’ an University, Xi’ an 710054, China
  • Received:2000-05-31 Revised:1900-01-01 Online:2005-12-25 Published:2005-12-25

PDF

摘要： 通过分析现有公路网节点重要度的指标的权重计算方法中存在的问题，提出利用主成分分析法进行公路网节点重要度的指标权重计算的思想.主成分分析法以适当的主成分综合原始指标的信息.克服原始指标中存在的相关性等不良影响.通过分析得到的主成分的方差贡献率，即为公路网节点重要度的各项新指标的权重系数.并给出应用实例.效果良好.

关键词: 主成分分析, 节点重要度, 指标, 权重

Abstract: This paper first analyzes the problem of current calculating methods of the weights of indexes of the highway nodes’ importance, and the principal component analysis method is put forward as a new thought.With the principal component analysis, the information of original indexes is combined by proper principal component, and the correlation lies in original indexes is eliminated. The variance contribution rates of the principal components by analyzing are the weights of the new indexes of the highway nodes’ importance. At last an example is introduced with good results.

Key words: principal component analysis, node important degree, index, weight