Measuring urban poverty using multi-source data and a random forest algorithm: A case study in Guangzhou

被引：0
作者：
Niu T. [1 ]
Chen Y. [1 ]
Yuan Y. [1 ]
机构：
[1] School of Geography and Planning, Guangdong Key Laboratory for Urbanization and Geo-simulation, Sun Yat-sen University, Guangzhou
来源：
Sustainable Cities and Society | 2020年 / 54卷
基金：
中国国家自然科学基金;
关键词：
General Deprivation Index; Multi-source Data Poverty Index; Random forest; Urban poverty;
D O I：
10.1016/j.scs.2020.102014
中图分类号：
学科分类号：
摘要：
Conventional measurements of urban poverty mainly rely on census data or aggregated statistics. However, these data are produced with a relatively long cycle, and they hardly reflect the built environment characteristics that affect the livelihoods of the inhabitants. Open-access social media data can be used as an alternative data source for the study of poverty. They typically provide fine-grained information with a short updating cycle. Therefore, in this study, we developed a new approach to measure urban poverty using multi-source big data. We used social media data and remote sensing images to represent the social conditions and the characteristics of built environments, respectively. These data were used to produce the indicators of material, economic, and living conditions, which are closely related to poverty. They were integrated into a composite index, namely the Multi-source Data Poverty Index (MDPI), based on the random forest (RF) algorithm. A dataset of the General Deprivation Index (GDI) derived from the census data was used as a reference to facilitate the training of RF. A case study was carried out in Guangzhou, China, to evaluate the performance of the proposed MDPI for measuring the community-level urban poverty. The results showed a high consistency between the MDPI and GDI. By analyzing the MDPI results, we found a significantly positive spatial autocorrelation in the community-level poverty condition in Guangzhou. Compared with the GDI approach, the proposed MDPI could be updated more conveniently using big data to provide more timely information of urban poverty. © 2020 Elsevier Ltd
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共 82 条
[41]  
Liu Z., He C., Zhang Q., Huang Q., Yang Y., Extracting the dynamics of urban expansion in China using DMSP-OLS nighttime light data from 1992 to 2008, Landscape and Urban Planning, 106, 1, pp. 62-72, (2012)
[42]  
Long Y., Shen Z., Geospatial analysis to support urban planning in Beijing, 116, (2015)
[43]  
Madden J.F., Changes in the distribution of poverty across and within the US metropolitan areas, 1979-89, Urban Studies, 33, 9, pp. 1581-1600, (1996)
[44]  
Magombeyi M.T., Odhiambo N., Dynamic impact of FDI inflows on poverty reduction: Empirical evidence from South Africa, Sustainable Cities and Society, 39, pp. 519-526, (2018)
[45]  
Moran P.A.P., Notes on continuous stochastic phenomena, Biometrika, 37, 1-2, pp. 17-23, (1950)
[46]  
Niebergall S., Loew A., Mauser W., Integrative assessment of informal settlements using VHR remote sensing data—The Delhi case study, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 1, 3, pp. 193-205, (2008)
[47]  
Noble M., Wright G., Smith G., Dibben C., Measuring multiple deprivation at the small-area level, Environment & Planning A, 38, 1, pp. 169-185, (2006)
[48]  
Noor A.M., Alegana V.A., Gething P.W., Tatem A.J., Snow R.W., Using remotely sensed night-time light as a proxy for poverty in Africa, Population Health Metrics, 6, 1, (2008)
[49]  
Otok B.W., Seftiana D., The classification of poor households in Jombang With random forest classification and regression trees (RF-CART) approach as the solution in achieving the 2015 Indonesian MDGs’ targets, International Journal of Science and Research, 3, 8, pp. 1497-1503, (2014)
[50]  
Padda I.U.H., Hameed A., Estimating multidimensional poverty levels in rural Pakistan: A contribution to sustainable development policies, Journal of Cleaner Production, 197, pp. 435-442, (2018)
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