关键词: 轨迹分析, 出租车客流网络, 复杂网络, 结构特征

Abstract: By analyzing floating taxi trajectory data, and using complex network theories, the complex structural (including topological structural, weight structural and spatial structural) properties of urban taxi passenger flow network is researched. The results indicate that the distances of taxi passenger flow obey a log-normal distribution. Distributions of degree, weight strength and distance strength of nodes indicate power-law decay with a “cut-off”. Weight distribution of edges also fits a power-law distribution quite well. There are strong power-law correlations between degree and both weight strength and distance strength. The assortative mixing of weight strength of nodes shows a slight positive correlation. These results indicate the relationships of topological, weight and spatial structural properties of taxi passenger flow network, and will be beneficial for revealing the interplaying mechanism and principles among urban spatial, functional and population travel characteristics.

Key words: trajectory analysis, taxi passenger flow network, complex network, structural properties