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引入主成份分析法计算节点重要度,既能全面地涵盖每个指标的信息,又消除了这些指标之间的相互影响,使得分析结果更加客观真实。对重要度区位联合布局法进行完善,克服了传统的节点重要度模型权重确定相对主观、指标之间的相关性缺乏统筹考虑的缺点。应用于江苏省综合运输通道布局研究,对江苏省所有县级及以上节点进行节点重要度评价分析,案例结果表明:模型将定量分析与传统的定性分析相结合,设计了较为合理的布局方案,对区域综合运输通道布局规划具有一定的借鉴与参考意义。
The introduction of principal component analysis (PCA) to calculate the importance of nodes can not only comprehensively cover the information of each index, but also eliminate the mutual influence between these indexes, making the analysis more objective and true. The method of perfecting joint layout method of important degree area overcomes the shortcomings that the weight of traditional node importance model determines the relative subjectivity and the correlation between the indexes lacks overall consideration. It is applied to the study of the comprehensive transport corridor layout in Jiangsu Province. The node importance evaluation is carried out for all nodes at county level and above in Jiangsu Province. The case study shows that the model combines the quantitative analysis with the traditional qualitative analysis to design a more reasonable layout scheme, It has certain reference and reference significance to the layout planning of the comprehensive transport corridor in the region.