距离约束在出租车客流网络结构中的作用研究

发布时间：2018-03-09 03:14

本文选题：距离约束　切入点：出租车客流网络　出处：《北京大学学报(自然科学版)》2014年05期 　论文类型：期刊论文

【摘要】：基于轨迹数据的提取与分析,发现出租车客流存在距离约束。建立包含距离约束的流量演化模型,生成模拟网络,并对不同约束参数下的网络结构进行比较分析,分析结果显示:距离约束导致网络的度分布、流量强度分布、距离强度分布等产生"截断"现象,并且约束距离越小,"截断"现象越明显。随着约束距离的减小,边权分布的衰减速度变慢。度流量强度相关性、度距离强度相关性整体呈现幂律相关,并且随着约束距离的减小,幂指数逐步增大。随着约束距离的减小,节点之间流量强度从微弱的负相关逐步转为微弱的正相关。研究结果有助于揭示人群移动的距离依赖性对出租车客流网络结构的影响规律。
[Abstract]:The extraction and analysis of trajectory data based on the distance constraint. There found a taxi passenger flow includes the establishment of distance constraint flow evolution model, simulation network, and the network structure under different constraint parameters are compared and analyzed. The analysis results show that the distance constraint causes degree distribution network, traffic intensity distribution, "truncation distance" phenomenon the intensity distribution, and the smaller the distance constraint, "truncation" phenomenon is obvious. With the decrease of distance constraints, the decay rate of the right side of the distribution will be slower. The degree of traffic intensity correlation degree distance of overall intensity correlation exhibits a power-law correlation, and decreases with distance constraints, the power index gradually increased with decreasing distance constraint. The nodes flow intensity from a weak negative correlation gradually turned into a weak positive correlation. The results are helpful to reveal the mobile population distance dependence on the taxi passenger network node The law of the influence of structure.

【作者单位】：北京大学遥感与地理信息系统研究所北京大学空间信息集成与3S工程应用北京市重点实验室;
【基金】：863计划(2009AA12Z217)资助
【分类号】：U492.4;P208

【参考文献】