{"id":"https://openalex.org/W1500265423","doi":"https://doi.org/10.1109/jurse.2015.7120494","title":"Mapping slums using spatial features in Accra, Ghana","display_name":"Mapping slums using spatial features in Accra, Ghana","publication_year":2015,"publication_date":"2015-03-01","ids":{"openalex":"https://openalex.org/W1500265423","doi":"https://doi.org/10.1109/jurse.2015.7120494","mag":"1500265423"},"language":"en","primary_location":{"id":"doi:10.1109/jurse.2015.7120494","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jurse.2015.7120494","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 Joint Urban Remote Sensing Event (JURSE)","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5045808718","display_name":"Ryan Engstrom","orcid":"https://orcid.org/0000-0002-3063-0551"},"institutions":[{"id":"https://openalex.org/I193531525","display_name":"George Washington University","ror":"https://ror.org/00y4zzh67","country_code":"US","type":"education","lineage":["https://openalex.org/I193531525"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Ryan Engstrom","raw_affiliation_strings":["Department of Geography, George Washington University, Washington, DC, USA","Department of Geography, George Washington University, DC 20052, USA"],"affiliations":[{"raw_affiliation_string":"Department of Geography, George Washington University, Washington, DC, USA","institution_ids":["https://openalex.org/I193531525"]},{"raw_affiliation_string":"Department of Geography, George Washington University, DC 20052, USA","institution_ids":["https://openalex.org/I193531525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5088100911","display_name":"Avery Sandborn","orcid":"https://orcid.org/0000-0002-5069-6929"},"institutions":[{"id":"https://openalex.org/I193531525","display_name":"George Washington University","ror":"https://ror.org/00y4zzh67","country_code":"US","type":"education","lineage":["https://openalex.org/I193531525"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Avery Sandborn","raw_affiliation_strings":["George Washington University Law School, Washington, DC, US","Department of Geography, George Washington University, DC 20052, USA"],"affiliations":[{"raw_affiliation_string":"George Washington University Law School, Washington, DC, US","institution_ids":["https://openalex.org/I193531525"]},{"raw_affiliation_string":"Department of Geography, George Washington University, DC 20052, USA","institution_ids":["https://openalex.org/I193531525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101785558","display_name":"Qin Yu","orcid":"https://orcid.org/0000-0002-6693-7299"},"institutions":[{"id":"https://openalex.org/I193531525","display_name":"George Washington University","ror":"https://ror.org/00y4zzh67","country_code":"US","type":"education","lineage":["https://openalex.org/I193531525"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Qin Yu","raw_affiliation_strings":["Department of Geography, George Washington University, Washington, DC, USA","Department of Geography, George Washington University, DC 20052, USA"],"affiliations":[{"raw_affiliation_string":"Department of Geography, George Washington University, Washington, DC, USA","institution_ids":["https://openalex.org/I193531525"]},{"raw_affiliation_string":"Department of Geography, George Washington University, DC 20052, USA","institution_ids":["https://openalex.org/I193531525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5014341505","display_name":"Jason Burgdorfer","orcid":null},"institutions":[{"id":"https://openalex.org/I193531525","display_name":"George Washington University","ror":"https://ror.org/00y4zzh67","country_code":"US","type":"education","lineage":["https://openalex.org/I193531525"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Jason Burgdorfer","raw_affiliation_strings":["Department of Geography, George Washington University, Washington, DC, USA","Department of Geography, George Washington University, DC 20052, USA"],"affiliations":[{"raw_affiliation_string":"Department of Geography, George Washington University, Washington, DC, USA","institution_ids":["https://openalex.org/I193531525"]},{"raw_affiliation_string":"Department of Geography, George Washington University, DC 20052, USA","institution_ids":["https://openalex.org/I193531525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5030862869","display_name":"Douglas A. Stow","orcid":"https://orcid.org/0000-0001-5246-7073"},"institutions":[{"id":"https://openalex.org/I26538001","display_name":"San Diego State University","ror":"https://ror.org/0264fdx42","country_code":"US","type":"education","lineage":["https://openalex.org/I26538001"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Douglas Stow","raw_affiliation_strings":["Department of Geography, San Diego State University","Department of Geography, San Diego State University, USA"],"affiliations":[{"raw_affiliation_string":"Department of Geography, San Diego State University","institution_ids":["https://openalex.org/I26538001"]},{"raw_affiliation_string":"Department of Geography, San Diego State University, USA","institution_ids":["https://openalex.org/I26538001"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102745153","display_name":"John R. Weeks","orcid":"https://orcid.org/0000-0002-3975-2918"},"institutions":[{"id":"https://openalex.org/I26538001","display_name":"San Diego State University","ror":"https://ror.org/0264fdx42","country_code":"US","type":"education","lineage":["https://openalex.org/I26538001"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"John Weeks","raw_affiliation_strings":["Department of Geography, San Diego State University","Department of Geography, San Diego State University, USA"],"affiliations":[{"raw_affiliation_string":"Department of Geography, San Diego State University","institution_ids":["https://openalex.org/I26538001"]},{"raw_affiliation_string":"Department of Geography, San Diego State University, USA","institution_ids":["https://openalex.org/I26538001"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5083724980","display_name":"Jordan Graesser","orcid":"https://orcid.org/0000-0002-6137-7050"},"institutions":[{"id":"https://openalex.org/I5023651","display_name":"McGill University","ror":"https://ror.org/01pxwe438","country_code":"CA","type":"education","lineage":["https://openalex.org/I5023651"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Jordan Graesser","raw_affiliation_strings":["Department of Geography, McGill University, Montreal, Canada","Department of Geography McGill University  Montreal Canada"],"affiliations":[{"raw_affiliation_string":"Department of Geography, McGill University, Montreal, Canada","institution_ids":["https://openalex.org/I5023651"]},{"raw_affiliation_string":"Department of Geography McGill University  Montreal Canada","institution_ids":["https://openalex.org/I5023651"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":7,"corresponding_author_ids":["https://openalex.org/A5045808718"],"corresponding_institution_ids":["https://openalex.org/I193531525"],"apc_list":null,"apc_paid":null,"fwci":18.8929,"has_fulltext":false,"cited_by_count":40,"citation_normalized_percentile":{"value":0.99011773,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":94,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"4"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12630","display_name":"African Botany and Ecology Studies","score":0.977400004863739,"subfield":{"id":"https://openalex.org/subfields/1107","display_name":"Forestry"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T12630","display_name":"African Botany and Ecology Studies","score":0.977400004863739,"subfield":{"id":"https://openalex.org/subfields/1107","display_name":"Forestry"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T12147","display_name":"Urban and Rural Development Challenges","score":0.968999981880188,"subfield":{"id":"https://openalex.org/subfields/3322","display_name":"Urban Studies"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10226","display_name":"Land Use and Ecosystem Services","score":0.9563000202178955,"subfield":{"id":"https://openalex.org/subfields/2306","display_name":"Global and Planetary Change"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/slum","display_name":"Slum","score":0.9177030324935913},{"id":"https://openalex.org/keywords/census","display_name":"Census","score":0.8132185935974121},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.6306325197219849},{"id":"https://openalex.org/keywords/cartography","display_name":"Cartography","score":0.5252475142478943},{"id":"https://openalex.org/keywords/population","display_name":"Population","score":0.5243116617202759},{"id":"https://openalex.org/keywords/geospatial-analysis","display_name":"Geospatial analysis","score":0.49425649642944336},{"id":"https://openalex.org/keywords/spatial-analysis","display_name":"Spatial analysis","score":0.46600064635276794},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.40450307726860046},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.36726850271224976},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.34546399116516113},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.2771608829498291},{"id":"https://openalex.org/keywords/demography","display_name":"Demography","score":0.17929509282112122},{"id":"https://openalex.org/keywords/sociology","display_name":"Sociology","score":0.09438565373420715}],"concepts":[{"id":"https://openalex.org/C2778631157","wikidata":"https://www.wikidata.org/wiki/Q201759","display_name":"Slum","level":3,"score":0.9177030324935913},{"id":"https://openalex.org/C52130261","wikidata":"https://www.wikidata.org/wiki/Q39825","display_name":"Census","level":3,"score":0.8132185935974121},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.6306325197219849},{"id":"https://openalex.org/C58640448","wikidata":"https://www.wikidata.org/wiki/Q42515","display_name":"Cartography","level":1,"score":0.5252475142478943},{"id":"https://openalex.org/C2908647359","wikidata":"https://www.wikidata.org/wiki/Q2625603","display_name":"Population","level":2,"score":0.5243116617202759},{"id":"https://openalex.org/C9770341","wikidata":"https://www.wikidata.org/wiki/Q1938983","display_name":"Geospatial analysis","level":2,"score":0.49425649642944336},{"id":"https://openalex.org/C159620131","wikidata":"https://www.wikidata.org/wiki/Q1938983","display_name":"Spatial analysis","level":2,"score":0.46600064635276794},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.40450307726860046},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.36726850271224976},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.34546399116516113},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2771608829498291},{"id":"https://openalex.org/C149923435","wikidata":"https://www.wikidata.org/wiki/Q37732","display_name":"Demography","level":1,"score":0.17929509282112122},{"id":"https://openalex.org/C144024400","wikidata":"https://www.wikidata.org/wiki/Q21201","display_name":"Sociology","level":0,"score":0.09438565373420715}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/jurse.2015.7120494","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jurse.2015.7120494","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 Joint Urban Remote Sensing Event (JURSE)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Sustainable cities and communities","score":0.7900000214576721,"id":"https://metadata.un.org/sdg/11"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320306101","display_name":"National Aeronautics and Space Administration","ror":"https://ror.org/027ka1x80"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":9,"referenced_works":["https://openalex.org/W22745672","https://openalex.org/W1515135833","https://openalex.org/W2070512596","https://openalex.org/W2089680916","https://openalex.org/W2094334758","https://openalex.org/W2131438174","https://openalex.org/W2150262608","https://openalex.org/W2161969291","https://openalex.org/W2163352848"],"related_works":["https://openalex.org/W2128472366","https://openalex.org/W621243299","https://openalex.org/W5594354","https://openalex.org/W4244351752","https://openalex.org/W2601163983","https://openalex.org/W2364090708","https://openalex.org/W2145323372","https://openalex.org/W1512152715","https://openalex.org/W2009948611","https://openalex.org/W4401575149"],"abstract_inverted_index":{"In":[0,31,175],"order":[1],"to":[2,65,73,120,139,157,177,209],"map":[3,66],"the":[4,81,95,114,121,140,146,158,172,178,181,206,218,232],"spatial":[5,57,61],"extent":[6],"and":[7,22,28,38,52,69,87,107,132,198,229],"location":[8],"of":[9,44,99,130,135,162,185,196,215,226],"slum":[10,67,77,109,118,123,144,179,227],"settlements":[11],"multiple":[12,56],"methodologies":[13],"have":[14],"been":[15],"devised":[16],"including":[17],"remote":[18,182,219],"sensing":[19,183,220],"based":[20,24,76,93],"methods":[21,25],"field":[23,75],"using":[26,171],"surveys":[27],"census":[29,89,142,173],"data.":[30,174],"this":[32],"study":[33],"we":[34],"utilize":[35],"spatial,":[36],"structural,":[37],"contextual":[39],"features":[40],"(e.g.,":[41],"PanTex,":[42],"Histogram":[43],"Oriented":[45],"Gradients,":[46],"Line":[47],"Support":[48],"Regions,":[49],"Hough":[50],"transforms":[51],"others)":[53],"calculated":[54],"at":[55],"scales":[58],"from":[59,80],"high":[60],"resolution":[62],"satellite":[63],"data":[64,90],"areas":[68,119,228],"compare":[70],"these":[71],"estimates":[72,184],"three":[74],"maps:":[78],"one":[79,167],"UN":[82,96],"Habitat/Accra":[83],"Metropolitan":[84],"Assembly":[85],"(UNAMA)":[86],"two":[88],"derived":[91,117,143],"maps":[92,145],"on":[94],"Habitat":[97],"definition":[98,124],"a":[100,102,108,133,223],"slum,":[101],"simple":[103],"slum/non-slum":[104],"dichotomy":[105],"map,":[106],"index":[110],"map.":[111],"When":[112,137],"comparing":[113],"remotely":[115],"sensed":[116],"UNAMA":[122],"results":[125,147],"indicate":[126],"an":[127,191,210],"overall":[128],"accuracy":[129,154],"94.3%":[131],"Kappa":[134],"0.91.":[136],"compared":[138],"dichotomous,":[141],"are":[148],"not":[149],"as":[150],"accurate.":[151],"This":[152],"reduced":[153],"is":[155],"due":[156],"substantial":[159],"over":[160],"prediction":[161],"slums,":[163],"especially":[164],"if":[165],"only":[166],"criterion":[168],"was":[169,202],"missing,":[170],"relation":[176],"index,":[180],"slums":[186],"were":[187],"significantly":[188],"correlated":[189],"with":[190],"r":[192,211],"<sup":[193,212],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[194,213],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">2</sup>":[195,214],"0.45":[197],"when":[199],"population":[200],"density":[201],"taken":[203],"into":[204],"account,":[205],"correlation":[207],"increased":[208],"0.78.":[216],"Overall,":[217],"methodology":[221],"provides":[222],"reasonable":[224],"estimate":[225],"variations":[230],"within":[231],"city.":[233]},"counts_by_year":[{"year":2025,"cited_by_count":4},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":5},{"year":2022,"cited_by_count":3},{"year":2021,"cited_by_count":8},{"year":2020,"cited_by_count":5},{"year":2019,"cited_by_count":5},{"year":2018,"cited_by_count":3},{"year":2017,"cited_by_count":2},{"year":2016,"cited_by_count":3}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}