北京市二手房价格时空演变特征
作者简介:周 湘(1991-),女,湖南邵阳人,硕士生,主要从事房地产时空大数据方面研究。E-mail: zhouxiang@lreis.ac.cn
收稿日期: 2017-03-13
要求修回日期: 2017-05-03
网络出版日期: 2017-08-20
基金资助
资源与环境信息系统国家重点实验室自主创新项目(O88RA20DYA)
Research on the Spatial and Temporal Evolution Characteristics of the Price of Second-hand Housing in Beijing
Received date: 2017-03-13
Request revised date: 2017-05-03
Online published: 2017-08-20
Copyright
城市住宅价格时空格局及演变特征是衡量城市房地产市场发展均衡性的重要指标。针对海量的互联网实时房产数据,本文构建了一种长时序时空大数据挖掘方法。首先,利用挂牌数据和成交数据,进行了泛在网络地产数据的可用性验证;其次,提出了“混合像元”的多尺度栅格模型,以构建基于栅格系统的房产统计特征描述,形成了多源网络房产数据融合方法;然后分别采用莫兰指数和地理探测器分析房价的空间自相关性和分异性,并基于P-Bshade和邻近栅格时空插值算法解决了稀疏房产数据的融合与插值问题,构建了长时序房地产时空栅格数据库;最后,以北京六环范围内为研究区域,通过栅格区划算法进行了二手房价格时空演变格局的挖掘分析。
关键词: 二手房价格; 泛在网络房地产大数据; 长时序栅格数据库; 时空演变格局
周湘 , 袁文 , 李汉青 , 马明清 , 袁武 . 北京市二手房价格时空演变特征[J]. 地球信息科学学报, 2017 , 19(8) : 1049 -1059 . DOI: 10.3724/SP.J.1047.2017.01049
The temporal and spatial pattern of urban housing price and its evolution characteristics are important indicators of measuring the equilibrium of urban real estate market. Based on the large amount of real time data of the Internet, we constructed a spatio-temporal data mining method using long time series. Firstly, a large number of real estate listing information and transaction data existing in different real estate business website had been obtained by web crawler technology. Secondly, the correlation between housing listing price and transaction price was tested using a linear regression model and the usability of ubiquitous online real estate data had been validated. Thirdly, a multi-scale grid model of mixed pixels was proposed, which was based on the description of the statistical characteristics of the real estate, and the problem of multi-source data fusion was solved. Moran’s I and Geo-detector were used to analyze the geographic spatial autocorrelation and non-homogeneity of housing listing price. The spatial raster database of long term real estate was constructed based on the combination of adjacent spatio-temporal interpolation and P-Bshade interpolation. Finally, the inner part of Beijing Six Ring Road was selected as the study area. We analyzed the spatial-temporal evolution characteristics of second-hand housing prices by grid partition algorithm. Overall, we explored the real time dynamic analysis method of real estate. The results showed that: in the first half of 2016, the growth rate of second-hand housing price was larger, and the latter half of the growth was relatively flat. The spatial distribution of second-hand housing price in Beijing was dominated by a single center pattern. At the same time, there are distributions of high island area. Dongcheng and Xicheng district were the core area of high housing prices, and the magnitude of price volatility was not consistent in different direction. The descending velocity of south of central city was the fastest. The diminishing rate of the north and northwest of central city were the slowest. The house price difference was more remarkable in the center of the city than that in the periphery region of the city.
Fig. 1 The process of adjacent grid spatio-temporal interpolation图1 栅格邻近时空插值过程 |
Tab. 1 The correlation coefficient of regression models表1 回归模型相关系数 |
模型 | R | R2 | 标准估计的误差 | Sig.F |
---|---|---|---|---|
一元线性回归模型 | 0.995a | 0.991 | 21.80594 | 0 |
Tab. 2 The regression coefficient表2 回归模型系数 |
模型 | B | 标准误差 | |
---|---|---|---|
一元线性 回归模型 | (常量) | 0.843 | 0.461 |
挂牌均价 | 0.938 | 0.001 |
Fig.2 The scatter plot of transaction price and listing price图2 成交价与挂牌均价散点图 |
Fig.3 Results of Moran’s I图3 莫兰指数计算结果 |
Tab. 3 Results of Geo-detector表3 地理探测器计算结果 |
L | N | SSW | SST | q | F(L-1, N-L) (α=0.01) | |
---|---|---|---|---|---|---|
20 | 16967 | 1185.638 | 596220.38 | 0.998 | 1.9 | 69.454 |
Fig.4 Series diagram for spatio-temporal evolution of second hand housing price图4 北京市二手房价格时空演变系列图 |
Fig.5 Series diagram for spatio-temporal evolution of month-on-month increment of second hand housing price图5 北京市二手房价格环比增量时空演变系列图 |
The authors have declared that no competing interests exist.
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