{"id":"https://openalex.org/W1489223085","doi":"https://doi.org/10.1002/asi.23439","title":"Discovering hierarchical topic evolution in time\u2010stamped documents","display_name":"Discovering hierarchical topic evolution in time\u2010stamped documents","publication_year":2015,"publication_date":"2015-06-05","ids":{"openalex":"https://openalex.org/W1489223085","doi":"https://doi.org/10.1002/asi.23439","mag":"1489223085"},"language":"en","primary_location":{"id":"doi:10.1002/asi.23439","is_oa":false,"landing_page_url":"https://doi.org/10.1002/asi.23439","pdf_url":null,"source":{"id":"https://openalex.org/S4210197613","display_name":"Journal of the Association for Information Science and Technology","issn_l":"2330-1635","issn":["2330-1635","2330-1643"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","erih-plus","jufo-3","ki-jl-1","norway-2"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of the Association for Information Science and Technology","raw_type":"journal-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/A5102010684","display_name":"Jun Song","orcid":"https://orcid.org/0000-0003-0659-1158","observed_orcids":["https://orcid.org/0000-0003-0659-1158"]},"institutions":[{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"government","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210110458","display_name":"Institute of Electronics","ror":"https://ror.org/01z143507","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]},{"id":"https://openalex.org/I4210165038","display_name":"University of Chinese Academy of Sciences","ror":"https://ror.org/05qbk4x57","country_code":"CN","type":"education","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210165038"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jun Song","raw_affiliation_strings":["The Key Laboratory of Technology in Geo\u2010Spatial Information Processing and Application System Institute of Electronics Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","University of Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","The Key Laboratory of Technology in Geo-Spatial Information Processing and Application System, Institute of Electronics, Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China","University of Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The Key Laboratory of Technology in Geo\u2010Spatial Information Processing and Application System Institute of Electronics Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]},{"raw_affiliation_string":"University of Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","institution_ids":["https://openalex.org/I4210165038"]},{"raw_affiliation_string":"The Key Laboratory of Technology in Geo-Spatial Information Processing and Application System, Institute of Electronics, Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]},{"raw_affiliation_string":"University of Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China","institution_ids":["https://openalex.org/I4210165038"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5055069752","display_name":"Yu Huang","orcid":"https://orcid.org/0000-0003-2730-5077","observed_orcids":["https://orcid.org/0000-0003-2730-5077"]},"institutions":[{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"government","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210110458","display_name":"Institute of Electronics","ror":"https://ror.org/01z143507","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yu Huang","raw_affiliation_strings":["The Key Laboratory of Technology in Geo\u2010Spatial Information Processing and Application System Institute of Electronics Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","The Key Laboratory of Technology in Geo-Spatial Information Processing and Application System, Institute of Electronics, Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The Key Laboratory of Technology in Geo\u2010Spatial Information Processing and Application System Institute of Electronics Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]},{"raw_affiliation_string":"The Key Laboratory of Technology in Geo-Spatial Information Processing and Application System, Institute of Electronics, Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5113251643","display_name":"Xiang Qi","orcid":"https://orcid.org/0000-0002-0155-2558","observed_orcids":["https://orcid.org/0000-0002-0155-2558","https://orcid.org/0000-0003-4658-5705"]},"institutions":[{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"government","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210110458","display_name":"Institute of Electronics","ror":"https://ror.org/01z143507","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]},{"id":"https://openalex.org/I4210165038","display_name":"University of Chinese Academy of Sciences","ror":"https://ror.org/05qbk4x57","country_code":"CN","type":"education","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210165038"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xiang Qi","raw_affiliation_strings":["The Key Laboratory of Technology in Geo\u2010Spatial Information Processing and Application System Institute of Electronics Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","University of Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","The Key Laboratory of Technology in Geo-Spatial Information Processing and Application System, Institute of Electronics, Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China","University of Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The Key Laboratory of Technology in Geo\u2010Spatial Information Processing and Application System Institute of Electronics Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]},{"raw_affiliation_string":"University of Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","institution_ids":["https://openalex.org/I4210165038"]},{"raw_affiliation_string":"The Key Laboratory of Technology in Geo-Spatial Information Processing and Application System, Institute of Electronics, Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]},{"raw_affiliation_string":"University of Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China","institution_ids":["https://openalex.org/I4210165038"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100652796","display_name":"Yuheng Li","orcid":"https://orcid.org/0000-0002-7449-511X","observed_orcids":["https://orcid.org/0000-0002-7449-511X"]},"institutions":[{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"government","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210110458","display_name":"Institute of Electronics","ror":"https://ror.org/01z143507","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]},{"id":"https://openalex.org/I4210165038","display_name":"University of Chinese Academy of Sciences","ror":"https://ror.org/05qbk4x57","country_code":"CN","type":"education","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210165038"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yuheng Li","raw_affiliation_strings":["The Key Laboratory of Technology in Geo\u2010Spatial Information Processing and Application System Institute of Electronics Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","University of Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","The Key Laboratory of Technology in Geo-Spatial Information Processing and Application System, Institute of Electronics, Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China","University of Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The Key Laboratory of Technology in Geo\u2010Spatial Information Processing and Application System Institute of Electronics Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]},{"raw_affiliation_string":"University of Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","institution_ids":["https://openalex.org/I4210165038"]},{"raw_affiliation_string":"The Key Laboratory of Technology in Geo-Spatial Information Processing and Application System, Institute of Electronics, Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]},{"raw_affiliation_string":"University of Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China","institution_ids":["https://openalex.org/I4210165038"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101640913","display_name":"Feng Li","orcid":"https://orcid.org/0000-0002-6602-0325","observed_orcids":["https://orcid.org/0000-0002-6602-0325","https://orcid.org/0000-0002-4108-1391"]},"institutions":[{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"government","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210110458","display_name":"Institute of Electronics","ror":"https://ror.org/01z143507","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Feng Li","raw_affiliation_strings":["The Key Laboratory of Technology in Geo\u2010Spatial Information Processing and Application System Institute of Electronics Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","The Key Laboratory of Technology in Geo-Spatial Information Processing and Application System, Institute of Electronics, Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The Key Laboratory of Technology in Geo\u2010Spatial Information Processing and Application System Institute of Electronics Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]},{"raw_affiliation_string":"The Key Laboratory of Technology in Geo-Spatial Information Processing and Application System, Institute of Electronics, Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5112365916","display_name":"Kun Fu","orcid":"https://orcid.org/0000-0002-0450-6469","observed_orcids":["https://orcid.org/0000-0002-0450-6469","https://orcid.org/0000-0002-0397-3110"]},"institutions":[{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"government","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210110458","display_name":"Institute of Electronics","ror":"https://ror.org/01z143507","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Kun Fu","raw_affiliation_strings":["The Key Laboratory of Technology in Geo\u2010Spatial Information Processing and Application System Institute of Electronics Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","The Key Laboratory of Technology in Geo-Spatial Information Processing and Application System, Institute of Electronics, Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The Key Laboratory of Technology in Geo\u2010Spatial Information Processing and Application System Institute of Electronics Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]},{"raw_affiliation_string":"The Key Laboratory of Technology in Geo-Spatial Information Processing and Application System, Institute of Electronics, Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5102729253","display_name":"Tinglei Huang","orcid":"https://orcid.org/0000-0002-9202-2842","observed_orcids":["https://orcid.org/0000-0002-9202-2842"]},"institutions":[{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"government","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210110458","display_name":"Institute of Electronics","ror":"https://ror.org/01z143507","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Tinglei Huang","raw_affiliation_strings":["The Key Laboratory of Technology in Geo\u2010Spatial Information Processing and Application System Institute of Electronics Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","The Key Laboratory of Technology in Geo-Spatial Information Processing and Application System, Institute of Electronics, Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The Key Laboratory of Technology in Geo\u2010Spatial Information Processing and Application System Institute of Electronics Chinese Academy of Sciences  No. 9 Zhongguancun Beiyitiao Alley, Haidian District Beijing 100190 China","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]},{"raw_affiliation_string":"The Key Laboratory of Technology in Geo-Spatial Information Processing and Application System, Institute of Electronics, Chinese Academy of Sciences, No. 9 Zhongguancun Beiyitiao Alley, Haidian District, Beijing, 100190 China","institution_ids":["https://openalex.org/I19820366","https://openalex.org/I4210110458"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":3310,"currency":"USD","value_usd":3310},"apc_paid":null,"fwci":1.8584,"has_fulltext":false,"cited_by_count":13,"citation_normalized_percentile":{"value":0.87788793,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":"67","issue":"4","first_page":"915","last_page":"927"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10028","display_name":"Topic Modeling","score":0.9282000064849854,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10028","display_name":"Topic Modeling","score":0.9282000064849854,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11901","display_name":"Bayesian Methods and Mixture Models","score":0.043800000101327896,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T13910","display_name":"Computational and Text Analysis Methods","score":0.010599999688565731,"subfield":{"id":"https://openalex.org/subfields/3300","display_name":"General Social Sciences"},"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/topic-hierarchy","display_name":"topic hierarchy","score":0.6639999747276306},{"id":"https://openalex.org/keywords/multiple-time-scales","display_name":"multiple time scales","score":0.8320000171661377},{"id":"https://openalex.org/keywords/gibbs-sampling","display_name":"Gibbs sampling","score":0.7310000061988831},{"id":"https://openalex.org/keywords/topic-modeling","display_name":"topic modeling","score":0.6499999761581421}],"concepts":[{"id":"https://openalex.org/C113954288","wikidata":"https://www.wikidata.org/wiki/Q186885","display_name":"Timestamp","level":2,"score":0.8808572292327881},{"id":"https://openalex.org/C31170391","wikidata":"https://www.wikidata.org/wiki/Q188619","display_name":"Hierarchy","level":2,"score":0.7536317110061646},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6395533680915833},{"id":"https://openalex.org/C98045186","wikidata":"https://www.wikidata.org/wiki/Q205663","display_name":"Process (computing)","level":2,"score":0.549625039100647},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.5112326145172119},{"id":"https://openalex.org/C2780009758","wikidata":"https://www.wikidata.org/wiki/Q6804172","display_name":"Measure (data warehouse)","level":2,"score":0.45972034335136414},{"id":"https://openalex.org/C144986985","wikidata":"https://www.wikidata.org/wiki/Q871236","display_name":"Hierarchical database model","level":2,"score":0.4455893933773041},{"id":"https://openalex.org/C12725497","wikidata":"https://www.wikidata.org/wiki/Q810247","display_name":"Baseline (sea)","level":2,"score":0.42686235904693604},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.1049467921257019},{"id":"https://openalex.org/C34447519","wikidata":"https://www.wikidata.org/wiki/Q179522","display_name":"Market economy","level":1,"score":0.0},{"id":"https://openalex.org/C111368507","wikidata":"https://www.wikidata.org/wiki/Q43518","display_name":"Oceanography","level":1,"score":0.0},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.0},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1002/asi.23439","is_oa":false,"landing_page_url":"https://doi.org/10.1002/asi.23439","pdf_url":null,"source":{"id":"https://openalex.org/S4210197613","display_name":"Journal of the Association for Information Science and Technology","issn_l":"2330-1635","issn":["2330-1635","2330-1643"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","erih-plus","jufo-3","ki-jl-1","norway-2"],"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of the Association for Information Science and Technology","raw_type":"journal-article"},{"id":"pmh:oai:RePEc:bla:jinfst:v:67:y:2016:i:4:p:915-927","is_oa":false,"landing_page_url":"http://hdl.handle.net/10.1002/asi.23439","pdf_url":null,"source":{"id":"https://openalex.org/S4306401271","display_name":"RePEc: Research Papers in Economics","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I77793887","host_organization_name":"Federal Reserve Bank of St. Louis","host_organization_lineage":["https://openalex.org/I77793887"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"article"}],"best_oa_location":null,"sustainable_development_goals":[],"sustainable_development_goals_aurora":[],"study_designs":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320335773","display_name":"National High-tech Research and Development Program","ror":null}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":34,"referenced_works":["https://openalex.org/W27793324","https://openalex.org/W258053484","https://openalex.org/W1627117674","https://openalex.org/W1880262756","https://openalex.org/W1915315806","https://openalex.org/W1970043789","https://openalex.org/W1994129711","https://openalex.org/W1998443950","https://openalex.org/W2001082470","https://openalex.org/W2007273639","https://openalex.org/W2010239571","https://openalex.org/W2012335150","https://openalex.org/W2053354515","https://openalex.org/W2064513326","https://openalex.org/W2072644219","https://openalex.org/W2097137169","https://openalex.org/W2100802943","https://openalex.org/W2103918763","https://openalex.org/W2110642088","https://openalex.org/W2122740842","https://openalex.org/W2126209883","https://openalex.org/W2128925311","https://openalex.org/W2144100511","https://openalex.org/W2150286230","https://openalex.org/W2152677317","https://openalex.org/W2157991246","https://openalex.org/W2161152810","https://openalex.org/W2171343266","https://openalex.org/W2615915281","https://openalex.org/W2952779384","https://openalex.org/W3099640513","https://openalex.org/W4235118305","https://openalex.org/W4237791300","https://openalex.org/W6684363390"],"related_works":["https://openalex.org/W2368138740","https://openalex.org/W1606975172","https://openalex.org/W4244121124","https://openalex.org/W1547043107","https://openalex.org/W105617988","https://openalex.org/W2589345488","https://openalex.org/W4295100968","https://openalex.org/W2921821063","https://openalex.org/W1489223085","https://openalex.org/W2403221396"],"abstract_inverted_index":{"The":[0,87],"objective":[1],"of":[2,37,153],"this":[3,57],"paper":[4],"is":[5,65,73,89,103,116],"to":[6,67,75,105],"propose":[7],"a":[8,20,68],"hierarchical":[9,143],"topic":[10],"evolution":[11],"model":[12,77,150],"(HTEM)":[13],"that":[14,72,132],"can":[15,136],"organize":[16],"time\u2010varying":[17],"topics":[18,33,139],"in":[19,46,99,151],"hierarchy":[21,39],"and":[22,43,82,140],"discover":[23,141],"their":[24,142],"evolutions":[25],"with":[26],"multiple":[27],"timescales.":[28],"In":[29],"the":[30,35,38,47,53,59,78,83,93,101,107,119,133,148],"proposed":[31,90,120,134],"HTEM,":[32],"near":[34,52],"root":[36],"are":[40],"more":[41],"abstract":[42],"also":[44,146],"evolve":[45],"longer":[48],"timescales":[49],"than":[50],"those":[51],"leaves.":[54],"To":[55],"achieve":[56],"goal,":[58],"distance\u2010dependent":[60],"Chinese":[61],"restaurant":[62],"process":[63,71,95],"(ddCRP)":[64],"extended":[66],"new":[69,94],"nested":[70],"able":[74],"simultaneously":[76],"dependencies":[79,108],"among":[80,109],"data":[81,129],"relationship":[84],"between":[85],"clusters.":[86],"HTEM":[88,135],"based":[91],"on":[92,125,155],"for":[96,118],"time\u2010stamped":[97],"documents,":[98],"which":[100],"timestamp":[102],"utilized":[104],"measure":[106],"documents.":[110],"Moreover,":[111],"an":[112],"efficient":[113],"Gibbs":[114],"sampler":[115],"developed":[117],"HTEM.":[121],"Our":[122],"experimental":[123],"results":[124],"two":[126],"popular":[127],"real\u2010world":[128],"sets":[130],"verify":[131],"capture":[137],"coherent":[138],"evolutions.":[144],"It":[145],"outperforms":[147],"baseline":[149],"terms":[152],"likelihood":[154],"held\u2010out":[156],"data.":[157]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2023,"cited_by_count":3},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":4},{"year":2017,"cited_by_count":2}],"updated_date":"2026-10-08T09:06:37.294493","created_date":"2025-10-10T00:00:00"}