{"id":21651,"date":"2025-05-21T12:12:24","date_gmt":"2025-05-21T06:42:24","guid":{"rendered":"https:\/\/iihs.co.in\/knowledge-gateway\/?p=21651"},"modified":"2025-06-05T16:01:04","modified_gmt":"2025-06-05T10:31:04","slug":"approximate-bayesian-inference-for-high-resolution-spatial-disaggregation-using-alternative-data-sources","status":"publish","type":"post","link":"https:\/\/iihs.co.in\/knowledge-gateway\/approximate-bayesian-inference-for-high-resolution-spatial-disaggregation-using-alternative-data-sources\/","title":{"rendered":"Approximate Bayesian Inference for High-Resolution Spatial Disaggregation Using Alternative Data Sources"},"content":{"rendered":"<div id='full_slider_1'  class='avia-fullwidth-slider main_color avia-shadow   avia-builder-el-0  el_before_av_layout_row  avia-builder-el-first   container_wrap sidebar_right'  ><div  class='avia-slideshow av-5bfvvzn-1637f59fcafba6e57cadef7c77b6dd5f avia-slideshow-featured av_slideshow_full avia-fade-slider av-slideshow-ui 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class='flex_cell_inner'><p>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-maxkjbwv-2f8f4ccf6760f44d36df4e7e949841d5\">\n#top .av-special-heading.av-maxkjbwv-2f8f4ccf6760f44d36df4e7e949841d5{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-maxkjbwv-2f8f4ccf6760f44d36df4e7e949841d5 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-maxkjbwv-2f8f4ccf6760f44d36df4e7e949841d5 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-maxkjbwv-2f8f4ccf6760f44d36df4e7e949841d5 av-special-heading-h3  avia-builder-el-5  el_before_av_textblock  avia-builder-el-first '><h3 class='av-special-heading-tag'  itemprop=\"headline\"  >Approximate Bayesian Inference for High-Resolution Spatial Disaggregation Using Alternative Data Sources<\/h3><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div><br \/>\n<section  class='av_textblock_section av-maxkkik5-831b547aa054f4653f01f4e6e6c0e624 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><span style=\"font-size: 13px; text-transform: none; color: #8a0000;\"><em>Anis Pakrashi, Arnab Hazra, <a href=\"https:\/\/iihs.co.in\/iihs-people\/team\/sooraj-m-raveendran\/\" target=\"_blank\" rel=\"noopener\">Sooraj M. Raveendran<\/a>, <a href=\"https:\/\/iihs.co.in\/iihs-people\/team\/krishnachandran-balakrishnan\/\" target=\"_blank\" rel=\"noopener\">Krishnachandran Balakrishnan <\/a><\/em>| 20 May 2025\u00a0<\/span><\/p>\n<\/div><\/section><br \/>\n<section  class='av_textblock_section av-maxkn5z8-d79f02989d3a6b8b197b031a2217066e '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p class=\"p2\">Abstract:<\/p>\n<p>This paper addresses the challenge of obtaining precise demographic information at a fine-grained spatial level, which is a necessity for planning localized public services such as water distribution networks, or understanding local human impacts on the ecosystem. While population sizes are commonly available for large administrative areas, such as wards in India, practical applications often demand knowledge of population density at smaller spatial scales. We explore the integration of alternative data sources, specifically satellite-derived products, including land cover, land use, street density, building heights, vegetation coverage, and drainage density. Using a case study focused on Bangalore City, India, with a ward-level population dataset for 198 wards and satellite-derived sources covering 786,702 pixels at a resolution of 30 m 30 m, we propose a semiparametric Bayesian spatial regression model for obtaining pixel-level population estimates. Given the high dimensionality of the problem, exact Bayesian inference is deemed impractical; we discuss an approximate Bayesian inference scheme based on the recently proposed max-and-smooth approach, a combination of Laplace approximation and Markov chain Monte Carlo. A simulation study validates the reasonable performance of our inferential approach. Mapping pixel-level estimates to the ward level demonstrates the effectiveness of our method in capturing the spatial distribution of population sizes. While our case study focuses on a demographic application, the methodology developed here readily applies to count-type spatial datasets from various scientific disciplines where high-resolution alternative data sources are available.<\/p>\n<\/div><\/section><br \/>\n<div  class='avia-button-wrap av-maxko268-6cfb71a9cc5d3a9efdd276f102667d80-wrap avia-button-left  avia-builder-el-8  el_after_av_textblock  el_before_av_hr '><a href='https:\/\/link.springer.com\/article\/10.1007\/s13253-025-00695-5' class='avia-button av-maxko268-6cfb71a9cc5d3a9efdd276f102667d80 avia-icon_select-yes-left-icon avia-size-medium avia-position-left avia-color-theme-color' target=\"_blank\" rel=\"noopener noreferrer\"><span class='avia_button_icon avia_button_icon_left' aria-hidden='true' data-av_icon='\ue82d' data-av_iconfont='entypo-fontello'><\/span><span class='avia_iconbox_title' >Access Paper<\/span><\/a><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" 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tag-link-position-5\" style=\"font-size: 14.434782608696pt;\" aria-label=\"Climate Change (10 items)\">Climate Change<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/conference-reports\/\" class=\"tag-cloud-link tag-link-187 tag-link-position-6\" style=\"font-size: 8pt;\" aria-label=\"Conference Reports (1 item)\">Conference Reports<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/cultural-flows\/\" class=\"tag-cloud-link tag-link-200 tag-link-position-7\" style=\"font-size: 8pt;\" aria-label=\"Cultural Flows (1 item)\">Cultural Flows<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/culture\/\" class=\"tag-cloud-link tag-link-107 tag-link-position-8\" style=\"font-size: 14.434782608696pt;\" aria-label=\"Culture (10 items)\">Culture<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/data-and-metrics\/\" class=\"tag-cloud-link tag-link-103 tag-link-position-9\" style=\"font-size: 18.347826086957pt;\" aria-label=\"Data and Metrics (30 items)\">Data and Metrics<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/design\/\" class=\"tag-cloud-link tag-link-145 tag-link-position-10\" style=\"font-size: 11.478260869565pt;\" aria-label=\"Design (4 items)\">Design<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/economic-development\/\" class=\"tag-cloud-link tag-link-99 tag-link-position-11\" style=\"font-size: 18.95652173913pt;\" aria-label=\"Economic Development (35 items)\">Economic Development<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/ecosystem\/\" class=\"tag-cloud-link tag-link-152 tag-link-position-12\" style=\"font-size: 15.826086956522pt;\" aria-label=\"Ecosystem (15 items)\">Ecosystem<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/energy\/\" class=\"tag-cloud-link tag-link-160 tag-link-position-13\" style=\"font-size: 11.478260869565pt;\" aria-label=\"Energy (4 items)\">Energy<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/environment-and-climate\/\" class=\"tag-cloud-link tag-link-104 tag-link-position-14\" style=\"font-size: 22pt;\" aria-label=\"Environment and Climate (80 items)\">Environment and Climate<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/equity\/\" class=\"tag-cloud-link tag-link-94 tag-link-position-15\" style=\"font-size: 9.5652173913043pt;\" aria-label=\"Equity (2 items)\">Equity<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/gender\/\" class=\"tag-cloud-link tag-link-110 tag-link-position-16\" style=\"font-size: 11.478260869565pt;\" aria-label=\"Gender (4 items)\">Gender<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/ghs-pop\/\" class=\"tag-cloud-link tag-link-183 tag-link-position-17\" style=\"font-size: 8pt;\" aria-label=\"GHS-POP (1 item)\">GHS-POP<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/governance\/\" class=\"tag-cloud-link tag-link-102 tag-link-position-18\" style=\"font-size: 18pt;\" aria-label=\"Governance (27 items)\">Governance<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/gynecology-and-obstetrics\/\" class=\"tag-cloud-link tag-link-188 tag-link-position-19\" style=\"font-size: 8pt;\" aria-label=\"Gynecology And Obstetrics (1 item)\">Gynecology And Obstetrics<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/health\/\" class=\"tag-cloud-link tag-link-151 tag-link-position-20\" style=\"font-size: 9.5652173913043pt;\" aria-label=\"Health (2 items)\">Health<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/higher-education\/\" class=\"tag-cloud-link tag-link-195 tag-link-position-21\" style=\"font-size: 8pt;\" aria-label=\"higher education (1 item)\">higher education<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/housing\/\" class=\"tag-cloud-link tag-link-13 tag-link-position-22\" style=\"font-size: 18pt;\" aria-label=\"Housing (27 items)\">Housing<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/human-development\/\" class=\"tag-cloud-link tag-link-100 tag-link-position-23\" style=\"font-size: 15.652173913043pt;\" aria-label=\"Human Development (14 items)\">Human Development<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/india\/\" class=\"tag-cloud-link tag-link-182 tag-link-position-24\" style=\"font-size: 8pt;\" aria-label=\"India (1 item)\">India<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/industrial-policy\/\" class=\"tag-cloud-link tag-link-80 tag-link-position-25\" style=\"font-size: 9.5652173913043pt;\" aria-label=\"Industrial Policy (2 items)\">Industrial Policy<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/institutional-structures\/\" class=\"tag-cloud-link tag-link-197 tag-link-position-26\" style=\"font-size: 8pt;\" aria-label=\"institutional structures (1 item)\">institutional structures<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/instructional-design\/\" class=\"tag-cloud-link tag-link-150 tag-link-position-27\" style=\"font-size: 9.5652173913043pt;\" aria-label=\"Instructional Design (2 items)\">Instructional Design<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/ipcc\/\" class=\"tag-cloud-link tag-link-126 tag-link-position-28\" style=\"font-size: 9.5652173913043pt;\" aria-label=\"IPCC (2 items)\">IPCC<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/knowledge\/\" class=\"tag-cloud-link tag-link-143 tag-link-position-29\" style=\"font-size: 10.608695652174pt;\" aria-label=\"Knowledge (3 items)\">Knowledge<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/land\/\" class=\"tag-cloud-link tag-link-108 tag-link-position-30\" style=\"font-size: 19.565217391304pt;\" aria-label=\"Land (42 items)\">Land<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/non-economic-loss\/\" class=\"tag-cloud-link tag-link-194 tag-link-position-31\" style=\"font-size: 8pt;\" aria-label=\"Non-Economic Loss &quot; (1 item)\">Non-Economic Loss &quot;<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/pedagogy\/\" class=\"tag-cloud-link tag-link-196 tag-link-position-32\" style=\"font-size: 8pt;\" aria-label=\"pedagogy (1 item)\">pedagogy<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/planning\/\" class=\"tag-cloud-link tag-link-106 tag-link-position-33\" style=\"font-size: 17.565217391304pt;\" aria-label=\"Planning (24 items)\">Planning<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/policies\/\" class=\"tag-cloud-link tag-link-146 tag-link-position-34\" style=\"font-size: 10.608695652174pt;\" aria-label=\"Policies (3 items)\">Policies<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/population-mapping\/\" class=\"tag-cloud-link tag-link-184 tag-link-position-35\" style=\"font-size: 8pt;\" aria-label=\"population mapping (1 item)\">population mapping<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/poverty-and-inequality\/\" class=\"tag-cloud-link tag-link-101 tag-link-position-36\" style=\"font-size: 17.391304347826pt;\" aria-label=\"Poverty and Inequality (23 items)\">Poverty and Inequality<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/research-communication\/\" class=\"tag-cloud-link tag-link-199 tag-link-position-37\" style=\"font-size: 8pt;\" aria-label=\"Bet365 लाइव क्रिकेट स्ट्रीमिंग Communication (1 item)\">Bet365 लाइव क्रिकेट स्ट्रीमिंग Communication<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/risk\/\" class=\"tag-cloud-link tag-link-97 tag-link-position-38\" style=\"font-size: 16.521739130435pt;\" aria-label=\"Risk (18 items)\">Risk<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/scholarly-publishing\/\" class=\"tag-cloud-link tag-link-130 tag-link-position-39\" style=\"font-size: 9.5652173913043pt;\" aria-label=\"Scholarly Publishing (2 items)\">Scholarly Publishing<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/science-gaps\/\" class=\"tag-cloud-link tag-link-193 tag-link-position-40\" style=\"font-size: 8pt;\" aria-label=\"Science Gaps (1 item)\">Science Gaps<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/sustainability\/\" class=\"tag-cloud-link tag-link-93 tag-link-position-41\" style=\"font-size: 12.782608695652pt;\" aria-label=\"Sustainability (6 items)\">Sustainability<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/transport\/\" class=\"tag-cloud-link tag-link-95 tag-link-position-42\" style=\"font-size: 12.173913043478pt;\" aria-label=\"Transport (5 items)\">Transport<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/urban-equality\/\" class=\"tag-cloud-link tag-link-198 tag-link-position-43\" style=\"font-size: 8pt;\" aria-label=\"urban equality (1 item)\">urban equality<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/urbanisation\/\" class=\"tag-cloud-link tag-link-88 tag-link-position-44\" style=\"font-size: 12.782608695652pt;\" aria-label=\"Urbanisation (6 items)\">Urbanisation<\/a>\n<a href=\"https:\/\/iihs.co.in\/knowledge-gateway\/tag\/water-and-sanitation\/\" class=\"tag-cloud-link tag-link-96 tag-link-position-45\" style=\"font-size: 17.826086956522pt;\" aria-label=\"Water and Sanitation (26 items)\">Water and Sanitation<\/a><\/div>\n<\/div><\/div><\/p>\n<\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p><em>Anis Pakrashi, Arnab Hazra, Sooraj M. Raveendran, Krishnachandran Balakrishnan<\/em><\/p>\n<hr\/>\n","protected":false},"author":6,"featured_media":17766,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[71],"tags":[],"class_list":["post-21651","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-paper"],"_links":{"self":[{"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/posts\/21651","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/comments?post=21651"}],"version-history":[{"count":3,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/posts\/21651\/revisions"}],"predecessor-version":[{"id":21653,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/posts\/21651\/revisions\/21653"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/media\/17766"}],"wp:attachment":[{"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/media?parent=21651"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/categories?post=21651"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/iihs.co.in\/knowledge-gateway\/wp-json\/wp\/v2\/tags?post=21651"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}