Interpretable Poverty Mapping using Social Media Data, Satellite Images, and Geospatial Information

2020/11/27 by Chiara Ledesma, Ledesma, Chiara, Oshean Lee Garonita +7
Computer Science · #68T99 #Computers and Society (cs.CY) #FOS: Computer and information sciences #K.4.2 #acm:68T99 #cs.CY #msc:68T99

paper · pdf · doi:10.48550/arxiv.2011.13563

Presented at NeurIPS 2020 Workshop on Machine Learning for the Developing World

arxiv created 2020/11/27 · arxiv updated 2020/11/30

Abstract

Access to accurate, granular, and up-to-date poverty data is essential for humanitarian organizations to identify vulnerable areas for poverty alleviation efforts. Recent works have shown success in combining computer vision and satellite imagery for poverty estimation; however, the cost of acquiring high-resolution images coupled with black box models can be a barrier to adoption for many development organizations. In this study, we present a interpretable and cost-efficient approach to poverty estimation using machine learning and readily accessible data sources including social media data, low-resolution satellite images, and volunteered geographic information. Using our method, we achieve an R² of 0.66 for wealth estimation in the Philippines, compared to 0.63 using satellite imagery. Finally, we use feature importance analysis to identify the highest contributing features both globally and locally to help decision makers gain deeper insights into poverty.

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