有向加权型城市网络的探索性分析  

Exploratory analysis of directed weighted network of city

作　　者：刘铮[1] 王世福[1] 赵渺希[1] 吴康[2,3] 

机构地区：[1]华南理工大学建筑学院城市规划系,广州510641 [2]中国科学院地理科学与资源研究所,北京100101 [3]中国科学院大学,北京100049

出　　处：《地理研究》2013年第7期1253-1268,共16页Geographical Research

基　　金：国家社会科学基金重大项目(11&ZD154);国家自然科学基金项目(51108184);教育部国家留学基金项目(201306150067);华南理工大学优秀博士学位论文创新基金项目

摘　　要：鉴于城市网络已成为城市与区域研究中的学术热点,研究引介了城市联系中无向加权网络的概念、特征、计算方法,在此基础上与无向加权网络进行比较,并以中国36座副省级以上城市的城市间网络地图关注度为研究素材,从实证案例的角度分析无向加权网络与有向加权网络在城市网络分析方面的差别。实证研究结果显示:在网络的结节性方面,互联网异地城市之间关注度与航空流量结节性具有强相关性,异地之间的城市地图查询在一定程度上表征了城市间出行期望,互联网关注中部分城市成为典型的流入地,而华北、西北等地省会城市成为典型的流出地;在多值网络的链接方面,研究对城市网络这一复杂结构系统的流,实现了"流向"与"流量"的同步分析,互联网中城市间关注强度的"出""入"反映了城市间吸引力系的非均衡性特征。总体而言,从互联网地理学的角度为城市网络分析方法提供一个新的切入点与数据来源,实现对有向加权网络的探索性分析,在计算方法上有向加权网络在分析城市体系中节点城市的职能与节点间的相互关系方面有更大的优势。As city network has become one of the academic focuses,this paper summarizes concept,characteristics,index and calculation of directed weighted network,focusing on empirical research of the internet map searching flows among 36 cities in China.The result shows that directed weighted network and undirected weighted network play different roles in the study of city network.In demonstration,internet map searching flow has strong correlation with airline flows in network nodular,which implies internet map searching flow represents the anticipation of travel.For nodes,out-flow type and in-flow type are found with regional distribution features,of which cities in North China and Northwest China represent strong flow out features.For links,this paper analyzes city network in both direction dimension and strength dimension,showing the non-symmetry relationship among cities.Overall,this paper provides new data source and viewpoint for city network research,and demonstrates the analysis in the method of directed weighted network.This method has a greater advantage in descripting the function of nodes and the relationship among cities.

关 键 词：有向加权网络 对称性 城市网络 互联网地理 

分 类 号：TU981[建筑科学—城市规划与设计]