期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
基于社交媒体数据的城市人群分类与活动特征分析 被引量:14
1
作者 周艳 李妍羲 +1 位作者 黄悦莹 耿二辉 《地球信息科学学报》 CSCD 北大核心 2017年第9期1238-1244,共7页
空间信息技术已开始进入全空间信息系统发展阶段,即将空间信息系统的范畴从传统测绘空间扩展到宇宙空间、室内空间、微观空间等可量测空间。位置大数据不仅是全空间信息系统的重要研究对象之一,而且也成为了广域全空间中了解人们生活方... 空间信息技术已开始进入全空间信息系统发展阶段,即将空间信息系统的范畴从传统测绘空间扩展到宇宙空间、室内空间、微观空间等可量测空间。位置大数据不仅是全空间信息系统的重要研究对象之一,而且也成为了广域全空间中了解人们生活方式以及城市动态变化的一种有效途径。本文基于社交媒体数据中的位置签到数据,提出一种不同于传统以社会经济属性为依据的城市人群分类方法。首先利用签到数据的时间序列构造矩阵模型;然后,通过分析用户签到活动的时间特征,采用K-means聚类算法和K近邻算法(K-NN)识别出具有不同时空行为特征的城市人群(静态居民、动态居民、通勤者以及访问者);最后,本文根据得到的人群分类结果,通过分析不同类型人群的时空间行为特征,发现不同类型人群时空间行为的差异性与潜在规律性,从而为表征城市人群的组成结构及特征,研究城市时空结构提供一种新的视角。 展开更多
关键词 位置签到数据 时间序列 时空间行为 城市人口分类
原文传递
A SPATIAL CLUSTER METHOD SUPPORTED BY GIS FOR URBAN-SUBURBAN-RURAL CLASSIFICATION 被引量:4
2
作者 ZHOUDe-min XUJian-chun +1 位作者 JohnRADKE MULan 《Chinese Geographical Science》 SCIE CSCD 2004年第4期337-342,共6页
This study was undertaken to construct a preliminary spatial analysis method for building an urban-suburban-rural category in the specific sample area of central California and providing distribution characteristics i... This study was undertaken to construct a preliminary spatial analysis method for building an urban-suburban-rural category in the specific sample area of central California and providing distribution characteristics in each category, based on which, some further studies such as regional manners of residential wood burning emission (PM2.5, the term used for a mixture of solid particles and liquid droplets found in the air, refers to particulate matter that is 2.5 mu m or smaller in size) could be carried out for the project of residential wood combustion. Demographic and infrastructure data with spatial characteristics were processed by integrating both Geographic Information System (GIS) and statistics method (Cluster Analysis), and then output to a category map as the result. It approached the quantitative and multi-variables description on the major characteristics variations among the urban, suburban and rural; and perfected the TIGER's urban-rural classification scheme by adding suburban category. Based on the free public GIS data, the spatial analysis method provides an easy and ideal tool for geographic researchers, environmental planners, urban/regional planners and administrators to delineate different categories of regional function on the specific locations and dig out spatial distribution information they wanted. Furthermore, it allows for future adjustment on some parameters as the spatial analysis method is implemented in the different regions or various eco-social models. 展开更多
关键词 GIS cluster analysis PM2.5 census tract urban-suburban-rural classification
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部