{"id":"https://openalex.org/W2137331635","doi":"https://doi.org/10.1145/2063576.2063655","title":"Building directories for social tagging systems","display_name":"Building directories for social tagging systems","publication_year":2011,"publication_date":"2011-10-24","ids":{"openalex":"https://openalex.org/W2137331635","doi":"https://doi.org/10.1145/2063576.2063655","mag":"2137331635"},"language":"en","primary_location":{"id":"doi:10.1145/2063576.2063655","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2063576.2063655","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 20th ACM international conference on Information and knowledge management","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/A5074698656","display_name":"Denis Heli\u0107","orcid":"https://orcid.org/0000-0003-0725-7450"},"institutions":[{"id":"https://openalex.org/I4092182","display_name":"Graz University of Technology","ror":"https://ror.org/00d7xrm67","country_code":"AT","type":"education","lineage":["https://openalex.org/I4092182"]}],"countries":["AT"],"is_corresponding":true,"raw_author_name":"Denis Helic","raw_affiliation_strings":["Knowledge Management Institute, Graz University of Technology, Graz, Austria","Knowledge Management Institute, Graz University of Technology, Graz, Austria#TAB#"],"affiliations":[{"raw_affiliation_string":"Knowledge Management Institute, Graz University of Technology, Graz, Austria","institution_ids":["https://openalex.org/I4092182"]},{"raw_affiliation_string":"Knowledge Management Institute, Graz University of Technology, Graz, Austria#TAB#","institution_ids":["https://openalex.org/I4092182"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5071422618","display_name":"Markus Strohmaier","orcid":"https://orcid.org/0000-0002-5485-5720"},"institutions":[{"id":"https://openalex.org/I4210088621","display_name":"Know Center Research GmbH (Austria)","ror":"https://ror.org/004zhad81","country_code":"AT","type":"company","lineage":["https://openalex.org/I4210088621"]},{"id":"https://openalex.org/I4092182","display_name":"Graz University of Technology","ror":"https://ror.org/00d7xrm67","country_code":"AT","type":"education","lineage":["https://openalex.org/I4092182"]}],"countries":["AT"],"is_corresponding":false,"raw_author_name":"Markus Strohmaier","raw_affiliation_strings":["Knowledge Management Institute and Know-Center, Graz University of Technology, Graz, Austria","Knowledge Management Institute and Know-Center, Graz University of Technology, Graz, Austria#TAB#"],"affiliations":[{"raw_affiliation_string":"Knowledge Management Institute and Know-Center, Graz University of Technology, Graz, Austria","institution_ids":["https://openalex.org/I4210088621","https://openalex.org/I4092182"]},{"raw_affiliation_string":"Knowledge Management Institute and Know-Center, Graz University of Technology, Graz, Austria#TAB#","institution_ids":["https://openalex.org/I4210088621","https://openalex.org/I4092182"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5074698656"],"corresponding_institution_ids":["https://openalex.org/I4092182"],"apc_list":null,"apc_paid":null,"fwci":2.4085,"has_fulltext":false,"cited_by_count":19,"citation_normalized_percentile":{"value":0.89450404,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"525","last_page":"534"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10064","display_name":"Complex Network Analysis Techniques","score":0.9991999864578247,"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":0.9991999864578247,"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/T10203","display_name":"Recommender Systems and Techniques","score":0.998199999332428,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"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/T11478","display_name":"Caching and Content Delivery","score":0.9973999857902527,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8312107920646667},{"id":"https://openalex.org/keywords/navigability","display_name":"Navigability","score":0.7988150119781494},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.6261898279190063},{"id":"https://openalex.org/keywords/hierarchy","display_name":"Hierarchy","score":0.582663357257843},{"id":"https://openalex.org/keywords/interface","display_name":"Interface (matter)","score":0.5280452966690063},{"id":"https://openalex.org/keywords/tag-system","display_name":"Tag system","score":0.4763784110546112},{"id":"https://openalex.org/keywords/visibility","display_name":"Visibility","score":0.4708615839481354},{"id":"https://openalex.org/keywords/folksonomy","display_name":"Folksonomy","score":0.4394386410713196},{"id":"https://openalex.org/keywords/social-network","display_name":"Social network (sociolinguistics)","score":0.4280024766921997},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.40920236706733704},{"id":"https://openalex.org/keywords/social-media","display_name":"Social media","score":0.21820536255836487},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.08089616894721985}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8312107920646667},{"id":"https://openalex.org/C2778972660","wikidata":"https://www.wikidata.org/wiki/Q1666353","display_name":"Navigability","level":2,"score":0.7988150119781494},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.6261898279190063},{"id":"https://openalex.org/C31170391","wikidata":"https://www.wikidata.org/wiki/Q188619","display_name":"Hierarchy","level":2,"score":0.582663357257843},{"id":"https://openalex.org/C113843644","wikidata":"https://www.wikidata.org/wiki/Q901882","display_name":"Interface (matter)","level":4,"score":0.5280452966690063},{"id":"https://openalex.org/C75003639","wikidata":"https://www.wikidata.org/wiki/Q3267583","display_name":"Tag system","level":2,"score":0.4763784110546112},{"id":"https://openalex.org/C123403432","wikidata":"https://www.wikidata.org/wiki/Q654068","display_name":"Visibility","level":2,"score":0.4708615839481354},{"id":"https://openalex.org/C2778431730","wikidata":"https://www.wikidata.org/wiki/Q494291","display_name":"Folksonomy","level":2,"score":0.4394386410713196},{"id":"https://openalex.org/C4727928","wikidata":"https://www.wikidata.org/wiki/Q17164759","display_name":"Social network (sociolinguistics)","level":3,"score":0.4280024766921997},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.40920236706733704},{"id":"https://openalex.org/C518677369","wikidata":"https://www.wikidata.org/wiki/Q202833","display_name":"Social media","level":2,"score":0.21820536255836487},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.08089616894721985},{"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/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0},{"id":"https://openalex.org/C173608175","wikidata":"https://www.wikidata.org/wiki/Q232661","display_name":"Parallel computing","level":1,"score":0.0},{"id":"https://openalex.org/C129307140","wikidata":"https://www.wikidata.org/wiki/Q6795880","display_name":"Maximum bubble pressure method","level":3,"score":0.0},{"id":"https://openalex.org/C58640448","wikidata":"https://www.wikidata.org/wiki/Q42515","display_name":"Cartography","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C157915830","wikidata":"https://www.wikidata.org/wiki/Q2928001","display_name":"Bubble","level":2,"score":0.0},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.0},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1145/2063576.2063655","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2063576.2063655","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 20th ACM international conference on Information and knowledge management","raw_type":"proceedings-article"},{"id":"pmh:oai:ub-madoc.bib.uni-mannheim.de:61596","is_oa":false,"landing_page_url":"https://dl.acm.org/doi/abs/10.1145/2063576.2063655","pdf_url":null,"source":{"id":"https://openalex.org/S4377196315","display_name":"MADOC (University of Mannheim)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I177802217","host_organization_name":"University of Mannheim","host_organization_lineage":["https://openalex.org/I177802217"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Konferenzver\u00f6ffentlichung"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G2814680360","display_name":null,"funder_award_id":"Antwerp","funder_id":"https://openalex.org/F4320324595","funder_display_name":"Universiteit Antwerpen"},{"id":"https://openalex.org/G7895516993","display_name":null,"funder_award_id":"Belgium","funder_id":"https://openalex.org/F4320322308","funder_display_name":"KU Leuven"}],"funders":[{"id":"https://openalex.org/F4320307764","display_name":"Microsoft","ror":"https://ror.org/00d0nc645"},{"id":"https://openalex.org/F4320307894","display_name":"Accenture","ror":"https://ror.org/013g16z83"},{"id":"https://openalex.org/F4320308668","display_name":"University of Southern California","ror":"https://ror.org/03taz7m60"},{"id":"https://openalex.org/F4320308943","display_name":"Microsoft Research","ror":"https://ror.org/00d0nc645"},{"id":"https://openalex.org/F4320309321","display_name":"Georgia Institute of Technology","ror":"https://ror.org/01zkghx44"},{"id":"https://openalex.org/F4320309835","display_name":"Arizona State University","ror":"https://ror.org/03efmqc40"},{"id":"https://openalex.org/F4320309893","display_name":"City University of Hong Kong","ror":"https://ror.org/03q8dnn23"},{"id":"https://openalex.org/F4320309913","display_name":"Washington State University","ror":"https://ror.org/05dk0ce17"},{"id":"https://openalex.org/F4320309993","display_name":"Florida International University","ror":"https://ror.org/02gz6gg07"},{"id":"https://openalex.org/F4320310145","display_name":"Johns Hopkins University","ror":"https://ror.org/00za53h95"},{"id":"https://openalex.org/F4320310161","display_name":"University of Central Florida","ror":"https://ror.org/036nfer12"},{"id":"https://openalex.org/F4320310174","display_name":"University of Pittsburgh","ror":"https://ror.org/01an3r305"},{"id":"https://openalex.org/F4320310177","display_name":"University of Louisville","ror":"https://ror.org/01ckdn478"},{"id":"https://openalex.org/F4320310179","display_name":"University of Oklahoma","ror":"https://ror.org/02aqsxs83"},{"id":"https://openalex.org/F4320310207","display_name":"Carnegie Mellon University","ror":"https://ror.org/05x2bcf33"},{"id":"https://openalex.org/F4320310248","display_name":"DePaul University","ror":"https://ror.org/04xtx5t16"},{"id":"https://openalex.org/F4320310343","display_name":"Drexel University","ror":"https://ror.org/04bdffz58"},{"id":"https://openalex.org/F4320310369","display_name":"National ICT Australia","ror":"https://ror.org/03q397159"},{"id":"https://openalex.org/F4320310400","display_name":"Dartmouth College","ror":"https://ror.org/049s0rh22"},{"id":"https://openalex.org/F4320310630","display_name":"University of Ottawa","ror":"https://ror.org/03c4mmv16"},{"id":"https://openalex.org/F4320311026","display_name":"Shandong University","ror":"https://ror.org/0207yh398"},{"id":"https://openalex.org/F4320311061","display_name":"Queen Mary University of London","ror":"https://ror.org/026zzn846"},{"id":"https://openalex.org/F4320311306","display_name":"University of Texas at Arlington","ror":"https://ror.org/019kgqr73"},{"id":"https://openalex.org/F4320311504","display_name":"Robert Gordon University","ror":"https://ror.org/04f0qj703"},{"id":"https://openalex.org/F4320311721","display_name":"Teesside University","ror":"https://ror.org/03z28gk75"},{"id":"https://openalex.org/F4320311722","display_name":"University of Wolverhampton","ror":"https://ror.org/01k2y1055"},{"id":"https://openalex.org/F4320311890","display_name":"Kent State University","ror":"https://ror.org/049pfb863"},{"id":"https://openalex.org/F4320311960","display_name":"University of Bedfordshire","ror":"https://ror.org/0400avk24"},{"id":"https://openalex.org/F4320312726","display_name":"University of Oregon","ror":"https://ror.org/0293rh119"},{"id":"https://openalex.org/F4320312855","display_name":"Missouri University of Science and Technology","ror":"https://ror.org/00scwqd12"},{"id":"https://openalex.org/F4320313188","display_name":"University of Massachusetts Boston","ror":"https://ror.org/04ydmy275"},{"id":"https://openalex.org/F4320313475","display_name":"Universit\u00e0 degli Studi di Milano","ror":"https://ror.org/00wjc7c48"},{"id":"https://openalex.org/F4320313975","display_name":"Universit\u00e0 degli Studi di Siena","ror":"https://ror.org/01tevnk56"},{"id":"https://openalex.org/F4320314097","display_name":"Florida Institute of Technology","ror":"https://ror.org/04atsbb87"},{"id":"https://openalex.org/F4320316922","display_name":"National Chengchi University","ror":"https://ror.org/03rqk8h36"},{"id":"https://openalex.org/F4320318602","display_name":"Universitat Pompeu Fabra","ror":"https://ror.org/04n0g0b29"},{"id":"https://openalex.org/F4320319918","display_name":"York University","ror":"https://ror.org/05fq50484"},{"id":"https://openalex.org/F4320319946","display_name":"University of Alberta","ror":"https://ror.org/0160cpw27"},{"id":"https://openalex.org/F4320320279","display_name":"University of Warwick","ror":"https://ror.org/01a77tt86"},{"id":"https://openalex.org/F4320320290","display_name":"University of Oxford","ror":"https://ror.org/052gg0110"},{"id":"https://openalex.org/F4320320337","display_name":"University of Glasgow","ror":"https://ror.org/00vtgdb53"},{"id":"https://openalex.org/F4320320865","display_name":"Dublin City University","ror":"https://ror.org/04a1a1e81"},{"id":"https://openalex.org/F4320320881","display_name":"Universit\u00e4t Heidelberg","ror":"https://ror.org/038t36y30"},{"id":"https://openalex.org/F4320320955","display_name":"Hong Kong Baptist University","ror":"https://ror.org/0145fw131"},{"id":"https://openalex.org/F4320320967","display_name":"University of Technology Sydney","ror":"https://ror.org/03f0f6041"},{"id":"https://openalex.org/F4320320972","display_name":"RMIT University","ror":"https://ror.org/04ttjf776"},{"id":"https://openalex.org/F4320320983","display_name":"Queensland University of Technology","ror":"https://ror.org/03pnv4752"},{"id":"https://openalex.org/F4320320987","display_name":"Curtin University of Technology","ror":"https://ror.org/02n415q13"},{"id":"https://openalex.org/F4320321008","display_name":"Universiteit van Amsterdam","ror":"https://ror.org/04dkp9463"},{"id":"https://openalex.org/F4320321012","display_name":"Technische Universiteit Delft","ror":"https://ror.org/02e2c7k09"},{"id":"https://openalex.org/F4320321013","display_name":"Radboud Universiteit","ror":"https://ror.org/016xsfp80"},{"id":"https://openalex.org/F4320321015","display_name":"University of Twente","ror":"https://ror.org/006hf6230"},{"id":"https://openalex.org/F4320321125","display_name":"Beihang University","ror":"https://ror.org/00wk2mp56"},{"id":"https://openalex.org/F4320321142","display_name":"Hanyang University","ror":"https://ror.org/046865y68"},{"id":"https://openalex.org/F4320321248","display_name":"Kangwon National University","ror":"https://ror.org/01mh5ph17"},{"id":"https://openalex.org/F4320321314","display_name":"Yonsei University","ror":"https://ror.org/01wjejq96"},{"id":"https://openalex.org/F4320321332","display_name":"Kyung Hee University","ror":"https://ror.org/01zqcg218"},{"id":"https://openalex.org/F4320321365","display_name":"Ewha Womans University","ror":"https://ror.org/053fp5c05"},{"id":"https://openalex.org/F4320321629","display_name":"Dalhousie University","ror":"https://ror.org/01e6qks80"},{"id":"https://openalex.org/F4320321630","display_name":"Dalian University of Technology","ror":"https://ror.org/023hj5876"},{"id":"https://openalex.org/F4320321851","display_name":"Fudan University","ror":"https://ror.org/013q1eq08"},{"id":"https://openalex.org/F4320321940","display_name":"Harbin Institute of Technology","ror":"https://ror.org/01yqg2h08"},{"id":"https://openalex.org/F4320321950","display_name":"Hebrew University of Jerusalem","ror":"https://ror.org/03qxff017"},{"id":"https://openalex.org/F4320321966","display_name":"Universit\u00e0 degli Studi di Padova","ror":"https://ror.org/00240q980"},{"id":"https://openalex.org/F4320322211","display_name":"Indian Institute of Technology Madras","ror":"https://ror.org/03v0r5n49"},{"id":"https://openalex.org/F4320322308","display_name":"KU Leuven","ror":"https://ror.org/05f950310"},{"id":"https://openalex.org/F4320322510","display_name":"Sapienza Universit\u00e0 di Roma","ror":"https://ror.org/02be6w209"},{"id":"https://openalex.org/F4320322592","display_name":"Tampereen Yliopisto","ror":"https://ror.org/033003e23"},{"id":"https://openalex.org/F4320322603","display_name":"Universiteit Gent","ror":"https://ror.org/00cv9y106"},{"id":"https://openalex.org/F4320322644","display_name":"University of Crete","ror":"https://ror.org/00dr28g20"},{"id":"https://openalex.org/F4320322676","display_name":"University of Waterloo","ror":"https://ror.org/01aff2v68"},{"id":"https://openalex.org/F4320322755","display_name":"Universidad Aut\u00f3noma de Madrid","ror":"https://ror.org/01cby8j38"},{"id":"https://openalex.org/F4320322829","display_name":"Universit\u00e9 de Toulouse","ror":"https://ror.org/017tgbk05"},{"id":"https://openalex.org/F4320323229","display_name":"National Central University","ror":"https://ror.org/00944ve71"},{"id":"https://openalex.org/F4320323384","display_name":"Technische Universit\u00e4t Darmstadt","ror":"https://ror.org/05n911h24"},{"id":"https://openalex.org/F4320323424","display_name":"Universidade de Lisboa","ror":"https://ror.org/01c27hj86"},{"id":"https://openalex.org/F4320323448","display_name":"Indian Institute of Technology Bombay","ror":"https://ror.org/02qyf5152"},{"id":"https://openalex.org/F4320323471","display_name":"Universit\u00e9 de Fribourg","ror":"https://ror.org/022fs9h90"},{"id":"https://openalex.org/F4320323834","display_name":"Universidad de Granada","ror":"https://ror.org/04njjy449"},{"id":"https://openalex.org/F4320323954","display_name":"University of Tsukuba","ror":"https://ror.org/02956yf07"},{"id":"https://openalex.org/F4320324054","display_name":"Bauhaus-Universit\u00e4t Weimar","ror":"https://ror.org/033bb5z47"},{"id":"https://openalex.org/F4320324094","display_name":"Technische Universit\u00e4t Berlin","ror":"https://ror.org/03v4gjf40"},{"id":"https://openalex.org/F4320324120","display_name":"Universit\u00e0 degli Studi di Verona","ror":"https://ror.org/039bp8j42"},{"id":"https://openalex.org/F4320324136","display_name":"Universit\u00e0 della Calabria","ror":"https://ror.org/02rc97e94"},{"id":"https://openalex.org/F4320324158","display_name":"Trakya \u00dcniversitesi","ror":"https://ror.org/00xa0xn82"},{"id":"https://openalex.org/F4320324161","display_name":"Korea Advanced Institute of Science and Technology","ror":"https://ror.org/05apxxy63"},{"id":"https://openalex.org/F4320324369","display_name":"Universidade Federal de Minas Gerais","ror":"https://ror.org/0176yjw32"},{"id":"https://openalex.org/F4320324466","display_name":"Universidad de Castilla-La Mancha","ror":"https://ror.org/05r78ng12"},{"id":"https://openalex.org/F4320324500","display_name":"Universidad de Valladolid","ror":"https://ror.org/01fvbaw18"},{"id":"https://openalex.org/F4320324595","display_name":"Universiteit Antwerpen","ror":"https://ror.org/008x57b05"},{"id":"https://openalex.org/F4320324663","display_name":"National Cheng Kung University","ror":"https://ror.org/01b8kcc49"},{"id":"https://openalex.org/F4320324787","display_name":"Peking University","ror":"https://ror.org/02v51f717"},{"id":"https://openalex.org/F4320325299","display_name":"Universidad de C\u00f3rdoba","ror":"https://ror.org/05yc77b46"},{"id":"https://openalex.org/F4320325356","display_name":"Julius-Maximilians-Universit\u00e4t W\u00fcrzburg","ror":"https://ror.org/00fbnyb24"},{"id":"https://openalex.org/F4320325559","display_name":"Guangxi Normal University","ror":"https://ror.org/02frt9q65"},{"id":"https://openalex.org/F4320326505","display_name":"Universit\u00e4t Konstanz","ror":"https://ror.org/0546hnb39"},{"id":"https://openalex.org/F4320326610","display_name":"Haute \u00e9cole Sp\u00e9cialis\u00e9e de Suisse Occidentale","ror":"https://ror.org/03r5zec51"},{"id":"https://openalex.org/F4320326873","display_name":"National Laboratory of Pattern Recognition","ror":null},{"id":"https://openalex.org/F4320328562","display_name":"Universidade da Coru\u00f1a","ror":"https://ror.org/01qckj285"},{"id":"https://openalex.org/F4320328656","display_name":"Singapore Management University","ror":"https://ror.org/050qmg959"},{"id":"https://openalex.org/F4320330127","display_name":"Technische Universit\u00e4t Clausthal","ror":"https://ror.org/04qb8nc58"},{"id":"https://openalex.org/F4320332222","display_name":"University of Illinois at Urbana-Champaign","ror":"https://ror.org/047426m28"},{"id":"https://openalex.org/F4320332502","display_name":"University of California, Los Angeles","ror":"https://ror.org/046rm7j60"},{"id":"https://openalex.org/F4320332749","display_name":"University of Massachusetts Amherst","ror":"https://ror.org/0072zz521"},{"id":"https://openalex.org/F4320333993","display_name":"Microsoft Research Asia","ror":"https://ror.org/0300m5276"},{"id":"https://openalex.org/F4320334744","display_name":"Institute for Infocomm Research","ror":"https://ror.org/053rfa017"},{"id":"https://openalex.org/F4320335226","display_name":"Instituto Superior T\u00e9cnico","ror":"https://ror.org/01c27hj86"},{"id":"https://openalex.org/F4320335829","display_name":"Otto von Guericke University Magdeburg","ror":"https://ror.org/00ggpsq73"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":36,"referenced_works":["https://openalex.org/W34018906","https://openalex.org/W1505460822","https://openalex.org/W1527463082","https://openalex.org/W1572272766","https://openalex.org/W1573579329","https://openalex.org/W1876696094","https://openalex.org/W1971215074","https://openalex.org/W1980940295","https://openalex.org/W2016277697","https://openalex.org/W2037705937","https://openalex.org/W2043469923","https://openalex.org/W2054678262","https://openalex.org/W2070497706","https://openalex.org/W2083412755","https://openalex.org/W2087103167","https://openalex.org/W2099608293","https://openalex.org/W2102720960","https://openalex.org/W2106219095","https://openalex.org/W2110792685","https://openalex.org/W2112090702","https://openalex.org/W2117449950","https://openalex.org/W2124997584","https://openalex.org/W2128678576","https://openalex.org/W2139143639","https://openalex.org/W2147037342","https://openalex.org/W2147952642","https://openalex.org/W2148604310","https://openalex.org/W2152520507","https://openalex.org/W2161173831","https://openalex.org/W2163899560","https://openalex.org/W2164195254","https://openalex.org/W2167699886","https://openalex.org/W2243945130","https://openalex.org/W3099786402","https://openalex.org/W6634264458","https://openalex.org/W7030713319"],"related_works":["https://openalex.org/W949645987","https://openalex.org/W2909712102","https://openalex.org/W2092084389","https://openalex.org/W1950485419","https://openalex.org/W1978453817","https://openalex.org/W2622548874","https://openalex.org/W2054678262","https://openalex.org/W1577749430","https://openalex.org/W1967841946","https://openalex.org/W3011383355"],"abstract_inverted_index":{"Today,":[0],"a":[1,92,102,131,191],"number":[2,140],"of":[3,51,59,86,94,118,141,214],"algorithms":[4,16,160],"exist":[5],"for":[6,111,206],"constructing":[7],"tag":[8,40,61,103,158],"hierarchies":[9,41,62],"from":[10,31,68],"social":[11,46,77,152,215],"tagging":[12,47,78,153,216],"data.":[13],"While":[14],"these":[15,39],"were":[17],"designed":[18],"with":[19],"ontological":[20],"goals":[21],"in":[22,45,76,120,164],"mind,":[23],"we":[24,83,123,189],"know":[25],"very":[26],"little":[27],"about":[28],"their":[29],"properties":[30],"an":[32],"information":[33],"retrieval":[34],"perspective,":[35],"such":[36,60,136],"as":[37,71,88,108,137],"whether":[38],"support":[42,162],"efficient":[43],"navigation":[44,75,85,163],"systems.":[48,79,217],"The":[49,202],"aim":[50,124],"this":[52,81,100,187],"paper":[53],"is":[54],"to":[55,125,211],"investigate":[56],"the":[57,116,121,139],"usefulness":[58],"(sometimes":[63],"also":[64,169],"called":[65],"folksonomies":[66],"-":[67],"folk-generated":[69],"taxonomy)":[70],"directories":[72,87,122,198],"that":[73,156,171,194],"aid":[74],"To":[80],"end,":[82],"simulate":[84],"decentralized":[89,112],"search":[90],"on":[91,149,186,199],"network":[93],"tags":[95],"using":[96],"Kleinberg's":[97],"model.":[98],"In":[99],"model,":[101],"hierarchy":[104,159],"can":[105,161],"be":[106],"applied":[107],"background":[109],"knowledge":[110],"search.":[113],"By":[114],"constraining":[115],"visibility":[117],"nodes":[119],"mimic":[126],"typical":[127],"constraints":[128],"imposed":[129],"by":[130],"practical":[132],"user":[133,177],"interface":[134,178],"(UI),":[135],"limiting":[138],"displayed":[142],"subcategories":[143],"or":[144],"related":[145],"categories.":[146],"Our":[147],"experiments":[148],"five":[150],"different":[151],"datasets":[154],"show":[155],"existing":[157],"theory,":[165],"but":[166],"our":[167,200],"results":[168,203],"demonstrate":[170],"they":[172],"face":[173],"tremendous":[174],"challenges":[175],"when":[176],"(UI)":[179],"restrictions":[180],"are":[181,204],"taken":[182],"into":[183],"account.":[184],"Based":[185],"observation,":[188],"introduce":[190],"new":[192],"algorithm":[193],"constructs":[195],"efficiently":[196],"navigable":[197],"datasets.":[201],"relevant":[205],"engineers":[207],"and":[208],"scientists":[209],"aiming":[210],"improve":[212],"navigability":[213]},"counts_by_year":[{"year":2021,"cited_by_count":1},{"year":2018,"cited_by_count":2},{"year":2017,"cited_by_count":3},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":4},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":5}],"updated_date":"2026-04-10T15:06:20.359241","created_date":"2025-10-10T00:00:00"}