港口供需匹配指标体系构建研究

A research on construction of the port supply and demand matching index system

港口供需匹配及其评价指标体系直接关乎着港口运营效率的高低,是港口管理部门和港口运营部门关注的重要内容。本研究对港口供需匹配指标体系构建进行了研究,主要创新点包括:一是提出了港口供给和需求匹配的影响因素,海选出了港口供给和需求匹配相关指标体系。二是利用相关-主成分分析得到了优化精简港口供需匹配指标体系。在采集上海港2000-2013年年度数据,利用相关分析剔除了相关系数高于0.8的指标,一次优化指标体系中供给和需求指标数量分别仅保留了44%和33.3%;利用主成分分析对初筛的评价指标体系进行二次优化筛选,结果表明优化筛选后的供给和需求指标用25%和24%的评价指标都能够反映90%以上的一次优化指标信息。

The port supply and demand matching and the evaluation index system is directly related to the efficiency of port oper- ation level, and it is the core problem which draws the attention of the port management and operation departments. This paper studies the construction of port supply and demand matching index system. The key innovations include ： firstly, the port supply and demand matching factors is proposed, and the port supply and demand matching index system is selected; secondly, the port supply and demand matching index system has been optimized with the correlation - principal component analysis method. By collecting the annual data of Shanghai port 2000 - 2013 and using correlation analysis, the index with correlation coefficient grea- ter than 0.8 is removed, and the number of supply index and demand index were retained by 44% and 33.3% respectively in the first optimization. Using the principal component analysis method, a second optimization was made to the first - optimized indi- ces, showing that the supply and demand indices after screening were 25% and 24% respectively, and they were able to reflect more than 90% of the first - optimized index information.