{"id":"https://openalex.org/W2805779608","doi":"https://doi.org/10.1145/3209281.3209378","title":"Enhancing situation awareness of public safety events by visualizing topic evolution using social media","display_name":"Enhancing situation awareness of public safety events by visualizing topic evolution using social media","publication_year":2018,"publication_date":"2018-05-30","ids":{"openalex":"https://openalex.org/W2805779608","doi":"https://doi.org/10.1145/3209281.3209378","mag":"2805779608"},"language":"en","primary_location":{"id":"doi:10.1145/3209281.3209378","is_oa":false,"landing_page_url":"https://doi.org/10.1145/3209281.3209378","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 19th Annual International Conference on Digital Government Research: Governance in the Data Age","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/A5072335941","display_name":"Qing Deng","orcid":"https://orcid.org/0000-0001-5116-461X"},"institutions":[{"id":"https://openalex.org/I99065089","display_name":"Tsinghua University","ror":"https://ror.org/03cve4549","country_code":"CN","type":"education","lineage":["https://openalex.org/I99065089"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Qing Deng","raw_affiliation_strings":["Tsinghua University, Beijing, China"],"affiliations":[{"raw_affiliation_string":"Tsinghua University, Beijing, China","institution_ids":["https://openalex.org/I99065089"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5072017344","display_name":"Guoray Cai","orcid":"https://orcid.org/0000-0002-5189-8442"},"institutions":[{"id":"https://openalex.org/I130769515","display_name":"Pennsylvania State University","ror":"https://ror.org/04p491231","country_code":"US","type":"education","lineage":["https://openalex.org/I130769515"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Guoray Cai","raw_affiliation_strings":["Penn State University"],"affiliations":[{"raw_affiliation_string":"Penn State University","institution_ids":["https://openalex.org/I130769515"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100672024","display_name":"Hui Zhang","orcid":"https://orcid.org/0000-0003-2220-4859"},"institutions":[{"id":"https://openalex.org/I99065089","display_name":"Tsinghua University","ror":"https://ror.org/03cve4549","country_code":"CN","type":"education","lineage":["https://openalex.org/I99065089"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Hui Zhang","raw_affiliation_strings":["Tsinghua University, Beijing, China"],"affiliations":[{"raw_affiliation_string":"Tsinghua University, Beijing, China","institution_ids":["https://openalex.org/I99065089"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100695128","display_name":"Yi Liu","orcid":"https://orcid.org/0000-0001-9993-0731"},"institutions":[{"id":"https://openalex.org/I37448385","display_name":"China People's Public Security University","ror":"https://ror.org/05twya590","country_code":"CN","type":"education","lineage":["https://openalex.org/I37448385"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yi Liu","raw_affiliation_strings":["People's Public Security University of China, Beijing, China"],"affiliations":[{"raw_affiliation_string":"People's Public Security University of China, Beijing, China","institution_ids":["https://openalex.org/I37448385"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5069617930","display_name":"Lida Huang","orcid":"https://orcid.org/0000-0002-2663-6221"},"institutions":[{"id":"https://openalex.org/I99065089","display_name":"Tsinghua University","ror":"https://ror.org/03cve4549","country_code":"CN","type":"education","lineage":["https://openalex.org/I99065089"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Lida Huang","raw_affiliation_strings":["Tsinghua University, Beijing, China"],"affiliations":[{"raw_affiliation_string":"Tsinghua University, Beijing, China","institution_ids":["https://openalex.org/I99065089"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5065803398","display_name":"Feng Sun","orcid":"https://orcid.org/0000-0002-5788-1182"},"institutions":[{"id":"https://openalex.org/I130769515","display_name":"Pennsylvania State University","ror":"https://ror.org/04p491231","country_code":"US","type":"education","lineage":["https://openalex.org/I130769515"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Feng Sun","raw_affiliation_strings":["Penn State University"],"affiliations":[{"raw_affiliation_string":"Penn State University","institution_ids":["https://openalex.org/I130769515"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5072335941"],"corresponding_institution_ids":["https://openalex.org/I99065089"],"apc_list":null,"apc_paid":null,"fwci":1.9606,"has_fulltext":false,"cited_by_count":18,"citation_normalized_percentile":{"value":0.86525235,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"10"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10064","display_name":"Complex Network Analysis Techniques","score":0.9927999973297119,"subfield":{"id":"https://openalex.org/subfields/3109","display_name":"Statistical and Nonlinear Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10064","display_name":"Complex Network Analysis Techniques","score":0.9927999973297119,"subfield":{"id":"https://openalex.org/subfields/3109","display_name":"Statistical and Nonlinear Physics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11121","display_name":"Public Relations and Crisis Communication","score":0.9860000014305115,"subfield":{"id":"https://openalex.org/subfields/3315","display_name":"Communication"},"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/T10953","display_name":"E-Government and Public Services","score":0.9656999707221985,"subfield":{"id":"https://openalex.org/subfields/3320","display_name":"Political Science and International Relations"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/social-media","display_name":"Social media","score":0.6800369024276733},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6121479868888855},{"id":"https://openalex.org/keywords/visualization","display_name":"Visualization","score":0.4535062313079834},{"id":"https://openalex.org/keywords/data-science","display_name":"Data science","score":0.433369904756546},{"id":"https://openalex.org/keywords/internet-privacy","display_name":"Internet privacy","score":0.35251301527023315},{"id":"https://openalex.org/keywords/knowledge-management","display_name":"Knowledge management","score":0.32204359769821167},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.26486629247665405},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.14849361777305603}],"concepts":[{"id":"https://openalex.org/C518677369","wikidata":"https://www.wikidata.org/wiki/Q202833","display_name":"Social media","level":2,"score":0.6800369024276733},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6121479868888855},{"id":"https://openalex.org/C36464697","wikidata":"https://www.wikidata.org/wiki/Q451553","display_name":"Visualization","level":2,"score":0.4535062313079834},{"id":"https://openalex.org/C2522767166","wikidata":"https://www.wikidata.org/wiki/Q2374463","display_name":"Data science","level":1,"score":0.433369904756546},{"id":"https://openalex.org/C108827166","wikidata":"https://www.wikidata.org/wiki/Q175975","display_name":"Internet privacy","level":1,"score":0.35251301527023315},{"id":"https://openalex.org/C56739046","wikidata":"https://www.wikidata.org/wiki/Q192060","display_name":"Knowledge management","level":1,"score":0.32204359769821167},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.26486629247665405},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.14849361777305603}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/3209281.3209378","is_oa":false,"landing_page_url":"https://doi.org/10.1145/3209281.3209378","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 19th Annual International Conference on Digital Government Research: Governance in the Data Age","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/13","score":0.7200000286102295,"display_name":"Climate action"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":58,"referenced_works":["https://openalex.org/W40549020","https://openalex.org/W80158660","https://openalex.org/W1029364628","https://openalex.org/W1518761017","https://openalex.org/W1534625513","https://openalex.org/W1779560748","https://openalex.org/W1880262756","https://openalex.org/W1890727290","https://openalex.org/W1965258521","https://openalex.org/W1981468681","https://openalex.org/W1993052001","https://openalex.org/W2001601466","https://openalex.org/W2007408696","https://openalex.org/W2009662901","https://openalex.org/W2014519121","https://openalex.org/W2015170579","https://openalex.org/W2024180862","https://openalex.org/W2026037750","https://openalex.org/W2038043464","https://openalex.org/W2059314918","https://openalex.org/W2094774520","https://openalex.org/W2099223662","https://openalex.org/W2121071887","https://openalex.org/W2151519001","https://openalex.org/W2174706414","https://openalex.org/W2186830126","https://openalex.org/W2199399284","https://openalex.org/W2218333116","https://openalex.org/W2248012015","https://openalex.org/W2277218397","https://openalex.org/W2279009378","https://openalex.org/W2292818183","https://openalex.org/W2293494547","https://openalex.org/W2345108561","https://openalex.org/W2370336089","https://openalex.org/W2426621241","https://openalex.org/W2473319053","https://openalex.org/W2489728956","https://openalex.org/W2493985858","https://openalex.org/W2512995531","https://openalex.org/W2522869886","https://openalex.org/W2523776954","https://openalex.org/W2529178477","https://openalex.org/W2531554976","https://openalex.org/W2572935257","https://openalex.org/W2574082379","https://openalex.org/W2587258343","https://openalex.org/W2595304170","https://openalex.org/W2597270458","https://openalex.org/W2610826102","https://openalex.org/W2620002096","https://openalex.org/W2742970053","https://openalex.org/W2750351539","https://openalex.org/W2758306703","https://openalex.org/W2767616591","https://openalex.org/W2899096213","https://openalex.org/W4231510805","https://openalex.org/W4387556195"],"related_works":["https://openalex.org/W2748952813","https://openalex.org/W1549056443","https://openalex.org/W1493022169","https://openalex.org/W1584304702","https://openalex.org/W2363669182","https://openalex.org/W2525150146","https://openalex.org/W1582096518","https://openalex.org/W1604110270","https://openalex.org/W2792152840","https://openalex.org/W251114125"],"abstract_inverted_index":{"Social":[0],"media":[1,21],"contributes":[2],"to":[3,26,48,63,90,119,146,150,152,171,213,218],"enhancing":[4],"transparency":[5],"and":[6,15,30,129,204,211],"openness":[7],"for":[8,67],"the":[9,49,69,92,95,99,110,131,143,158,180,196,219],"purpose":[10],"of":[11,52,71,94,97,106,112,123,195],"innovating":[12],"public":[13,28,72],"services":[14],"policy-making.":[16],"In":[17,88],"disaster":[18,34],"management,":[19],"social":[20],"data":[22,39,66],"can":[23],"be":[24],"mined":[25],"discover":[27,147],"perceptions":[29],"concerns":[31],"on":[32,207],"large":[33,38],"events.":[35],"However,":[36],"converting":[37],"streams":[40],"into":[41],"useful":[42],"information":[43,217],"remains":[44],"a":[45,76,166,183],"challenge":[46],"due":[47],"unstructured":[50],"nature":[51],"textual":[53],"data.":[54,87],"This":[55],"study":[56],"proposes":[57],"an":[58],"interactive":[59],"topic":[60,132,137,168,197],"modeling":[61],"method":[62,145],"analyze":[64],"microblog":[65,85],"understanding":[68,194],"dynamics":[70],"expressions":[73],"immediately":[74],"after":[75],"major":[77,201],"explosion":[78],"event.":[79],"First,":[80],"we":[81,164],"extract":[82],"topics":[83,100,116,149,160],"from":[84,179],"message":[86],"order":[89],"test":[91],"influence":[93],"number":[96,111],"topics,":[98,182],"are":[101,117,140,161],"detected":[102],"at":[103,125],"multiple":[104],"levels":[105],"granularity":[107],"by":[108,142,176],"varying":[109],"topics.":[113],"Second,":[114],"these":[115],"used":[118],"detect":[120,172],"topical":[121],"compositions":[122],"contents":[124],"different":[126],"time":[127],"slices":[128],"assess":[130],"evolution":[133,138,199],"over":[134],"time.":[135],"The":[136,190],"patterns":[139],"visualized":[141],"streamgraph":[144],"informative":[148],"help":[151],"take":[153],"further":[154],"actions.":[155],"Third,":[156],"since":[157],"first-level":[159,181],"not":[162],"informative,":[163],"conduct":[165],"second-level":[167],"(subtopic)":[169],"analysis":[170],"key":[173],"decision":[174],"elements":[175],"choosing":[177],"\"investigation\"":[178],"hot":[184],"focus":[185],"in":[186],"any":[187],"man-made":[188,202],"disaster.":[189],"results":[191],"improve":[192],"our":[193],"composition":[198],"around":[200],"disasters":[203],"have":[205],"implications":[206],"officials":[208],"deciding":[209],"what":[210],"when":[212],"release":[214],"formal":[215],"investigation":[216],"public.":[220]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":2},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":8},{"year":2019,"cited_by_count":3}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
