主成分分析法在城市交通可持续发展评价中的应用

摘要

通过主成分分析法将成都城市交通可持续发展的23项评价指标化为3个主成分,并对各主成分作出符合实际意义的解释,然后利用各主成分的得分曲线对成都不同时期城市交通可持续发展进行比较分析,得出影响成都城市交通可持续发展的波动因素.文章所采用的主成分分析法能够克服传统方法中“模糊性”“主观性”等问题,对城市交通可持续发展进行客观评价.%As there are many indicators with very high correlation to evaluate urban transport sustainable development level, which make the indicators system' s dimensionality reduction possible. By using Principal Component Analysis, this paper classifies 23 evaluation indicators of Chengdu urban transport into 3 principal components with a meaningful explanation. Then the principal component score curve is used to compare traffic sustainable development of Chengdu in different periods and the volatilities which affect Chengdu' s traffic sustainable development are obtained. The method mentioned in this article can objectively evaluate sustainable development for urban traffic without fuzzy analysis.