{"id":"https://openalex.org/W1976427539","doi":"https://doi.org/10.1109/clei.2014.6965161","title":"Let's go to the cinema! A movie recommender system for ephemeral groups of users","display_name":"Let's go to the cinema! A movie recommender system for ephemeral groups of users","publication_year":2014,"publication_date":"2014-09-01","ids":{"openalex":"https://openalex.org/W1976427539","doi":"https://doi.org/10.1109/clei.2014.6965161","mag":"1976427539"},"language":"en","primary_location":{"id":"doi:10.1109/clei.2014.6965161","is_oa":false,"landing_page_url":"https://doi.org/10.1109/clei.2014.6965161","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2014 XL Latin American Computing Conference (CLEI)","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref","doaj"],"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/A5088055323","display_name":"Guillermo Dom\u00ednguez Fern\u00e1ndez","orcid":"https://orcid.org/0000-0002-1811-0326"},"institutions":[{"id":"https://openalex.org/I180910786","display_name":"Universidad de la Rep\u00fablica","ror":"https://ror.org/030bbe882","country_code":"UY","type":"education","lineage":["https://openalex.org/I180910786"]}],"countries":["UY"],"is_corresponding":true,"raw_author_name":"Guillermo Fernandez","raw_affiliation_strings":["Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica, Montevideo, Uruguay","Institute de Computation, Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica., Julio Herrera \u0443 Reissig 565, 11300, Montevideo, Uruguay"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica, Montevideo, Uruguay","institution_ids":["https://openalex.org/I180910786"]},{"raw_affiliation_string":"Institute de Computation, Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica., Julio Herrera \u0443 Reissig 565, 11300, Montevideo, Uruguay","institution_ids":["https://openalex.org/I180910786"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5009583183","display_name":"Waldemar L\u00f3pez","orcid":null},"institutions":[{"id":"https://openalex.org/I180910786","display_name":"Universidad de la Rep\u00fablica","ror":"https://ror.org/030bbe882","country_code":"UY","type":"education","lineage":["https://openalex.org/I180910786"]}],"countries":["UY"],"is_corresponding":false,"raw_author_name":"Waldemar Lopez","raw_affiliation_strings":["Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica, Montevideo, Uruguay","Institute de Computation, Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica., Julio Herrera \u0443 Reissig 565, 11300, Montevideo, Uruguay"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica, Montevideo, Uruguay","institution_ids":["https://openalex.org/I180910786"]},{"raw_affiliation_string":"Institute de Computation, Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica., Julio Herrera \u0443 Reissig 565, 11300, Montevideo, Uruguay","institution_ids":["https://openalex.org/I180910786"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5031994385","display_name":"Fernando Olivera","orcid":"https://orcid.org/0000-0001-9894-1869"},"institutions":[{"id":"https://openalex.org/I180910786","display_name":"Universidad de la Rep\u00fablica","ror":"https://ror.org/030bbe882","country_code":"UY","type":"education","lineage":["https://openalex.org/I180910786"]}],"countries":["UY"],"is_corresponding":false,"raw_author_name":"Fernando Olivera","raw_affiliation_strings":["Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica, Montevideo, Uruguay","Institute de Computation, Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica., Julio Herrera \u0443 Reissig 565, 11300, Montevideo, Uruguay"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica, Montevideo, Uruguay","institution_ids":["https://openalex.org/I180910786"]},{"raw_affiliation_string":"Institute de Computation, Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica., Julio Herrera \u0443 Reissig 565, 11300, Montevideo, Uruguay","institution_ids":["https://openalex.org/I180910786"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5079673099","display_name":"Bruno Rienzi","orcid":null},"institutions":[{"id":"https://openalex.org/I180910786","display_name":"Universidad de la Rep\u00fablica","ror":"https://ror.org/030bbe882","country_code":"UY","type":"education","lineage":["https://openalex.org/I180910786"]}],"countries":["UY"],"is_corresponding":false,"raw_author_name":"Bruno Rienzi","raw_affiliation_strings":["Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica, Montevideo, Uruguay","Institute de Computation, Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica., Julio Herrera \u0443 Reissig 565, 11300, Montevideo, Uruguay"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica, Montevideo, Uruguay","institution_ids":["https://openalex.org/I180910786"]},{"raw_affiliation_string":"Institute de Computation, Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica., Julio Herrera \u0443 Reissig 565, 11300, Montevideo, Uruguay","institution_ids":["https://openalex.org/I180910786"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5076552530","display_name":"Pablo Rodr\u00edguez\u2010Bocca","orcid":"https://orcid.org/0000-0002-2953-1345"},"institutions":[{"id":"https://openalex.org/I180910786","display_name":"Universidad de la Rep\u00fablica","ror":"https://ror.org/030bbe882","country_code":"UY","type":"education","lineage":["https://openalex.org/I180910786"]}],"countries":["UY"],"is_corresponding":false,"raw_author_name":"Pablo Rodriguez-Bocca","raw_affiliation_strings":["Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica, Montevideo, Uruguay","Institute de Computation, Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica., Julio Herrera \u0443 Reissig 565, 11300, Montevideo, Uruguay"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica, Montevideo, Uruguay","institution_ids":["https://openalex.org/I180910786"]},{"raw_affiliation_string":"Institute de Computation, Facultad de Ingenier\u00eda, Universidad de la Rep\u00fablica., Julio Herrera \u0443 Reissig 565, 11300, Montevideo, Uruguay","institution_ids":["https://openalex.org/I180910786"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5088055323"],"corresponding_institution_ids":["https://openalex.org/I180910786"],"apc_list":null,"apc_paid":null,"fwci":2.4598,"has_fulltext":false,"cited_by_count":9,"citation_normalized_percentile":{"value":0.90691622,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"12"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10203","display_name":"Recommender Systems and Techniques","score":0.9998999834060669,"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"}},"topics":[{"id":"https://openalex.org/T10203","display_name":"Recommender Systems and Techniques","score":0.9998999834060669,"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/T12101","display_name":"Advanced Bandit Algorithms Research","score":0.9936000108718872,"subfield":{"id":"https://openalex.org/subfields/1803","display_name":"Management Science and Operations Research"},"field":{"id":"https://openalex.org/fields/18","display_name":"Decision Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T11165","display_name":"Image and Video Quality Assessment","score":0.9785000085830688,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"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/ephemeral-key","display_name":"Ephemeral key","score":0.8735575675964355},{"id":"https://openalex.org/keywords/recommender-system","display_name":"Recommender system","score":0.8622093200683594},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7762436866760254},{"id":"https://openalex.org/keywords/movie-theater","display_name":"Movie theater","score":0.67208331823349},{"id":"https://openalex.org/keywords/architecture","display_name":"Architecture","score":0.5384798645973206},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.4787554144859314},{"id":"https://openalex.org/keywords/service","display_name":"Service (business)","score":0.4763239324092865},{"id":"https://openalex.org/keywords/multiplicative-function","display_name":"Multiplicative function","score":0.4150829315185547},{"id":"https://openalex.org/keywords/group","display_name":"Group (periodic table)","score":0.41247352957725525},{"id":"https://openalex.org/keywords/multimedia","display_name":"Multimedia","score":0.4047587811946869},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.37165406346321106},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.13657519221305847},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.11678451299667358},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.09368398785591125},{"id":"https://openalex.org/keywords/art","display_name":"Art","score":0.09143465757369995}],"concepts":[{"id":"https://openalex.org/C76947770","wikidata":"https://www.wikidata.org/wiki/Q4533181","display_name":"Ephemeral key","level":2,"score":0.8735575675964355},{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.8622093200683594},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7762436866760254},{"id":"https://openalex.org/C519580073","wikidata":"https://www.wikidata.org/wiki/Q41253","display_name":"Movie theater","level":2,"score":0.67208331823349},{"id":"https://openalex.org/C123657996","wikidata":"https://www.wikidata.org/wiki/Q12271","display_name":"Architecture","level":2,"score":0.5384798645973206},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.4787554144859314},{"id":"https://openalex.org/C2780378061","wikidata":"https://www.wikidata.org/wiki/Q25351891","display_name":"Service (business)","level":2,"score":0.4763239324092865},{"id":"https://openalex.org/C42747912","wikidata":"https://www.wikidata.org/wiki/Q1048447","display_name":"Multiplicative function","level":2,"score":0.4150829315185547},{"id":"https://openalex.org/C2781311116","wikidata":"https://www.wikidata.org/wiki/Q83306","display_name":"Group (periodic table)","level":2,"score":0.41247352957725525},{"id":"https://openalex.org/C49774154","wikidata":"https://www.wikidata.org/wiki/Q131765","display_name":"Multimedia","level":1,"score":0.4047587811946869},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.37165406346321106},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.13657519221305847},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.11678451299667358},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.09368398785591125},{"id":"https://openalex.org/C142362112","wikidata":"https://www.wikidata.org/wiki/Q735","display_name":"Art","level":0,"score":0.09143465757369995},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0},{"id":"https://openalex.org/C52119013","wikidata":"https://www.wikidata.org/wiki/Q50637","display_name":"Art history","level":1,"score":0.0},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0},{"id":"https://openalex.org/C178790620","wikidata":"https://www.wikidata.org/wiki/Q11351","display_name":"Organic chemistry","level":1,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C166957645","wikidata":"https://www.wikidata.org/wiki/Q23498","display_name":"Archaeology","level":1,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C136264566","wikidata":"https://www.wikidata.org/wiki/Q159810","display_name":"Economy","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/clei.2014.6965161","is_oa":false,"landing_page_url":"https://doi.org/10.1109/clei.2014.6965161","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2014 XL Latin American Computing Conference (CLEI)","raw_type":"proceedings-article"},{"id":"pmh:oai:doaj.org/article:31d42d579f304e6c9172cb960be12ce0","is_oa":false,"landing_page_url":"https://doaj.org/article/31d42d579f304e6c9172cb960be12ce0","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"CLEI Electronic Journal, Vol 18, Iss 2, Pp 7:1-7:22 (2015)","raw_type":"article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":40,"referenced_works":["https://openalex.org/W52770770","https://openalex.org/W65998993","https://openalex.org/W70462524","https://openalex.org/W96809717","https://openalex.org/W171713406","https://openalex.org/W1486562431","https://openalex.org/W1527499847","https://openalex.org/W1589542286","https://openalex.org/W1690919088","https://openalex.org/W1955441067","https://openalex.org/W1977606842","https://openalex.org/W1999627569","https://openalex.org/W2009686152","https://openalex.org/W2040367556","https://openalex.org/W2042281163","https://openalex.org/W2047109571","https://openalex.org/W2054141820","https://openalex.org/W2080413222","https://openalex.org/W2103311328","https://openalex.org/W2110325612","https://openalex.org/W2135893550","https://openalex.org/W2140715253","https://openalex.org/W2150203549","https://openalex.org/W2152208379","https://openalex.org/W2159094788","https://openalex.org/W2165949563","https://openalex.org/W2187690772","https://openalex.org/W2327845425","https://openalex.org/W2328098781","https://openalex.org/W2408616300","https://openalex.org/W2501518699","https://openalex.org/W2622684336","https://openalex.org/W2950332743","https://openalex.org/W2970293376","https://openalex.org/W4285719527","https://openalex.org/W6602671468","https://openalex.org/W6602822218","https://openalex.org/W6603954848","https://openalex.org/W6676522543","https://openalex.org/W6767384657"],"related_works":["https://openalex.org/W4254841053","https://openalex.org/W2997601332","https://openalex.org/W2168350932","https://openalex.org/W4253528273","https://openalex.org/W2032050747","https://openalex.org/W2507616274","https://openalex.org/W4210746918","https://openalex.org/W2581328603","https://openalex.org/W4384255382","https://openalex.org/W1971515314"],"abstract_inverted_index":{"Going":[0],"to":[1,50,72,74,121],"the":[2,51,56,65,87,97,99,108,112,123,129,132],"cinema":[3],"or":[4],"watching":[5],"television":[6],"are":[7],"social":[8],"activities":[9],"that":[10,48],"generally":[11],"take":[12],"place":[13],"in":[14,119],"groups.":[15,142],"In":[16,36],"these":[17],"cases,":[18],"a":[19,41,70,93,135],"recommender":[20,32],"system":[21,43,54,133],"for":[22,34,44,60,96],"ephemeral":[23,141],"groups":[24,45],"of":[25,46,86,101,111,131,137],"users":[26,47],"is":[27],"more":[28],"suitable":[29],"than":[30],"(well-studied)":[31],"systems":[33],"individuals.":[35],"this":[37],"paper":[38],"we":[39,81,127],"present":[40],"recommendation":[42],"go":[49],"cinema.":[52],"The":[53],"uses":[55],"Slope":[57],"One":[58],"algorithm":[59],"computing":[61],"individual":[62],"predictions":[63],"and":[64,92,105,116],"Multiplicative":[66],"Utilitarian":[67],"Strategy":[68],"as":[69],"model":[71,114],"recommend":[73],"an":[75],"entire":[76],"group.":[77],"We":[78],"show":[79],"how":[80],"solved":[82],"all":[83],"practical":[84],"aspects":[85],"system;":[88],"including":[89],"its":[90],"architecture":[91],"mobile":[94],"application":[95],"service,":[98],"lack":[100],"user":[102],"data":[103],"(ramp-up":[104],"cold-start":[106],"problems),":[107],"scaling":[109],"fit":[110],"group":[113],"strategy,":[115],"other":[117],"improvements":[118],"order":[120],"reduce":[122],"response":[124],"time.":[125],"Finally,":[126],"validate":[128],"performance":[130],"with":[134,139],"set":[136],"experiments":[138],"57":[140]},"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2022,"cited_by_count":3},{"year":2021,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2016,"cited_by_count":2},{"year":2015,"cited_by_count":1}],"updated_date":"2026-05-06T08:25:59.206177","created_date":"2025-10-10T00:00:00"}
