{"id":"https://openalex.org/W2426802389","doi":"https://doi.org/10.1145/2934732.2934747","title":"Studying the Effect of Data Structures on the Efficiency of Collaborative Filtering Systems","display_name":"Studying the Effect of Data Structures on the Efficiency of Collaborative Filtering Systems","publication_year":2016,"publication_date":"2016-06-14","ids":{"openalex":"https://openalex.org/W2426802389","doi":"https://doi.org/10.1145/2934732.2934747","mag":"2426802389"},"language":"en","primary_location":{"id":"doi:10.1145/2934732.2934747","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2934732.2934747","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 4th Spanish Conference on Information Retrieval","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/A5058279882","display_name":"Pablo S\u00e1nchez","orcid":"https://orcid.org/0000-0003-1792-1706"},"institutions":[{"id":"https://openalex.org/I63634437","display_name":"Universidad Aut\u00f3noma de Madrid","ror":"https://ror.org/01cby8j38","country_code":"ES","type":"education","lineage":["https://openalex.org/I63634437"]}],"countries":["ES"],"is_corresponding":true,"raw_author_name":"Pablo S\u00e1nchez","raw_affiliation_strings":["Universidad Aut\u00f3noma de Madrid, Spain"],"affiliations":[{"raw_affiliation_string":"Universidad Aut\u00f3noma de Madrid, Spain","institution_ids":["https://openalex.org/I63634437"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5029757626","display_name":"Alejandro Bellog\u00edn","orcid":"https://orcid.org/0000-0001-6368-2510"},"institutions":[{"id":"https://openalex.org/I63634437","display_name":"Universidad Aut\u00f3noma de Madrid","ror":"https://ror.org/01cby8j38","country_code":"ES","type":"education","lineage":["https://openalex.org/I63634437"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Alejandro Bellog\u00edn","raw_affiliation_strings":["Universidad Aut\u00f3noma de Madrid, Spain"],"affiliations":[{"raw_affiliation_string":"Universidad Aut\u00f3noma de Madrid, Spain","institution_ids":["https://openalex.org/I63634437"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5068239690","display_name":"Iv\u00e1n Cantador","orcid":"https://orcid.org/0000-0001-6663-4231"},"institutions":[{"id":"https://openalex.org/I63634437","display_name":"Universidad Aut\u00f3noma de Madrid","ror":"https://ror.org/01cby8j38","country_code":"ES","type":"education","lineage":["https://openalex.org/I63634437"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Iv\u00e1n Cantador","raw_affiliation_strings":["Universidad Aut\u00f3noma de Madrid, Spain"],"affiliations":[{"raw_affiliation_string":"Universidad Aut\u00f3noma de Madrid, Spain","institution_ids":["https://openalex.org/I63634437"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5058279882"],"corresponding_institution_ids":["https://openalex.org/I63634437"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.06502095,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"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/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":0.9977999925613403,"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/T12761","display_name":"Data Stream Mining Techniques","score":0.9951000213623047,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8101637363433838},{"id":"https://openalex.org/keywords/recommender-system","display_name":"Recommender system","score":0.804950475692749},{"id":"https://openalex.org/keywords/hash-function","display_name":"Hash function","score":0.6511027216911316},{"id":"https://openalex.org/keywords/focus","display_name":"Focus (optics)","score":0.6309456825256348},{"id":"https://openalex.org/keywords/collaborative-filtering","display_name":"Collaborative filtering","score":0.6110241413116455},{"id":"https://openalex.org/keywords/binary-search-tree","display_name":"Binary search tree","score":0.5619281530380249},{"id":"https://openalex.org/keywords/data-structure","display_name":"Data structure","score":0.5007326602935791},{"id":"https://openalex.org/keywords/quality","display_name":"Quality (philosophy)","score":0.41226139664649963},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.4121280610561371},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.39518752694129944},{"id":"https://openalex.org/keywords/data-science","display_name":"Data science","score":0.37383833527565},{"id":"https://openalex.org/keywords/binary-tree","display_name":"Binary tree","score":0.3563193678855896},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.17810818552970886},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.09895405173301697}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8101637363433838},{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.804950475692749},{"id":"https://openalex.org/C99138194","wikidata":"https://www.wikidata.org/wiki/Q183427","display_name":"Hash function","level":2,"score":0.6511027216911316},{"id":"https://openalex.org/C192209626","wikidata":"https://www.wikidata.org/wiki/Q190909","display_name":"Focus (optics)","level":2,"score":0.6309456825256348},{"id":"https://openalex.org/C21569690","wikidata":"https://www.wikidata.org/wiki/Q94702","display_name":"Collaborative filtering","level":3,"score":0.6110241413116455},{"id":"https://openalex.org/C91154448","wikidata":"https://www.wikidata.org/wiki/Q623818","display_name":"Binary search tree","level":3,"score":0.5619281530380249},{"id":"https://openalex.org/C162319229","wikidata":"https://www.wikidata.org/wiki/Q175263","display_name":"Data structure","level":2,"score":0.5007326602935791},{"id":"https://openalex.org/C2779530757","wikidata":"https://www.wikidata.org/wiki/Q1207505","display_name":"Quality (philosophy)","level":2,"score":0.41226139664649963},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.4121280610561371},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.39518752694129944},{"id":"https://openalex.org/C2522767166","wikidata":"https://www.wikidata.org/wiki/Q2374463","display_name":"Data science","level":1,"score":0.37383833527565},{"id":"https://openalex.org/C197855036","wikidata":"https://www.wikidata.org/wiki/Q380172","display_name":"Binary tree","level":2,"score":0.3563193678855896},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.17810818552970886},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.09895405173301697},{"id":"https://openalex.org/C111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","level":1,"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/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1145/2934732.2934747","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2934732.2934747","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 4th Spanish Conference on Information Retrieval","raw_type":"proceedings-article"},{"id":"pmh:oai:www.tdx.cat:10486/675862","is_oa":false,"landing_page_url":"http://hdl.handle.net/10486/675862","pdf_url":null,"source":{"id":"https://openalex.org/S4306401111","display_name":"Tesis Doctorals en Xarxa (Consorci de Serveis Universitaris de Catalunya)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210090028","host_organization_name":"Consorci de Serveis Universitaris de Catalunya","host_organization_lineage":["https://openalex.org/I4210090028"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"acceptedVersion","is_accepted":true,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/conferenceObject"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/9","display_name":"Industry, innovation and infrastructure","score":0.4699999988079071}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":16,"referenced_works":["https://openalex.org/W1486317198","https://openalex.org/W1507039213","https://openalex.org/W1649293523","https://openalex.org/W1959619913","https://openalex.org/W2024695185","https://openalex.org/W2044121535","https://openalex.org/W2121710227","https://openalex.org/W2149243190","https://openalex.org/W2165949563","https://openalex.org/W2261427507","https://openalex.org/W2613995098","https://openalex.org/W2994465423","https://openalex.org/W3104921985","https://openalex.org/W6684173853","https://openalex.org/W6771589641","https://openalex.org/W6786301650"],"related_works":["https://openalex.org/W2056975861","https://openalex.org/W2363556447","https://openalex.org/W2089900921","https://openalex.org/W2501849745","https://openalex.org/W2011933350","https://openalex.org/W1510719821","https://openalex.org/W2046686992","https://openalex.org/W2093708041","https://openalex.org/W2041182800","https://openalex.org/W3169685561"],"abstract_inverted_index":{"Recommender":[0],"systems":[1,50],"is":[2,39,51],"an":[3,34],"active":[4],"research":[5],"area":[6],"where":[7],"the":[8,17,43,64,79],"major":[9],"focus":[10],"has":[11,25],"been":[12,26],"on":[13,28],"how":[14,29,59],"to":[15,30,45],"improve":[16],"quality":[18],"of":[19,66,85],"generated":[20],"recommendations,":[21],"but":[22],"less":[23],"attention":[24],"paid":[27],"do":[31],"it":[32],"in":[33,83],"efficient":[35],"way.":[36],"This":[37],"aspect":[38],"increasingly":[40],"important":[41],"because":[42],"information":[44],"be":[46],"considered":[47],"by":[48],"recommender":[49],"growing":[52],"exponentially.":[53],"In":[54],"this":[55],"paper":[56],"we":[57,91],"study":[58],"different":[60],"data":[61,81,95],"structures":[62,82,96],"affect":[63],"performance":[65],"these":[67],"systems.":[68],"Our":[69],"results":[70],"with":[71],"two":[72],"public":[73],"datasets":[74],"provide":[75],"relevant":[76],"insights":[77],"regarding":[78],"optimal":[80],"terms":[84],"memory":[86],"and":[87,101,108],"time":[88],"usages.":[89],"Specifically,":[90],"show":[92],"that":[93],"classical":[94],"like":[97,111],"Binary":[98],"Search":[99],"Trees":[100,103],"Red-Black":[102],"can":[104],"beat":[105],"more":[106],"complex":[107],"popular":[109],"alternatives":[110],"Hash":[112],"Tables.":[113]},"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2016-06-24T00:00:00"}