{"id":"https://openalex.org/W2023256567","doi":"https://doi.org/10.1145/2806416.2806559","title":"DifRec","display_name":"DifRec","publication_year":2015,"publication_date":"2015-10-17","ids":{"openalex":"https://openalex.org/W2023256567","doi":"https://doi.org/10.1145/2806416.2806559","mag":"2023256567"},"language":"en","primary_location":{"id":"doi:10.1145/2806416.2806559","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2806416.2806559","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 24th ACM International on Conference on Information and Knowledge Management","raw_type":"proceedings-article"},"type":"conference-paper","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/A5089268257","display_name":"Hossein Vahabi","orcid":"https://orcid.org/0009-0006-0396-6742"},"institutions":[{"id":"https://openalex.org/I1325784139","display_name":"Yahoo (United Kingdom)","ror":"https://ror.org/038p3gq39","country_code":"GB","type":"company","lineage":["https://openalex.org/I1325784139","https://openalex.org/I4210134091"]},{"id":"https://openalex.org/I2800095910","display_name":"Yahoo (Spain)","ror":"https://ror.org/03gq8sg42","country_code":"ES","type":"company","lineage":["https://openalex.org/I2800095910","https://openalex.org/I4210134091"]}],"countries":["ES","GB"],"is_corresponding":false,"raw_author_name":"Hossein Vahabi","raw_affiliation_strings":["Yahoo Labs, Barcelona, Spain",", Yahoo! Labs, Barcelona, Spain#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Yahoo Labs, Barcelona, Spain","institution_ids":["https://openalex.org/I2800095910"]},{"raw_affiliation_string":", Yahoo! Labs, Barcelona, Spain#TAB#","institution_ids":["https://openalex.org/I1325784139"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5057979014","display_name":"Iordanis Koutsopoulos","orcid":"https://orcid.org/0000-0001-7699-5276"},"institutions":[{"id":"https://openalex.org/I4210134249","display_name":"Centre for Research and Technology Hellas","ror":"https://ror.org/03bndpq63","country_code":"GR","type":"facility","lineage":["https://openalex.org/I4210134249"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Iordanis Koutsopoulos","raw_affiliation_strings":["AUEB and CERTH, Athens, Greece"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"AUEB and CERTH, Athens, Greece","institution_ids":["https://openalex.org/I4210134249"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5026420819","display_name":"Francesco Gullo","orcid":"https://orcid.org/0000-0002-7052-1114"},"institutions":[{"id":"https://openalex.org/I1325784139","display_name":"Yahoo (United Kingdom)","ror":"https://ror.org/038p3gq39","country_code":"GB","type":"company","lineage":["https://openalex.org/I1325784139","https://openalex.org/I4210134091"]},{"id":"https://openalex.org/I2800095910","display_name":"Yahoo (Spain)","ror":"https://ror.org/03gq8sg42","country_code":"ES","type":"company","lineage":["https://openalex.org/I2800095910","https://openalex.org/I4210134091"]}],"countries":["ES","GB"],"is_corresponding":false,"raw_author_name":"Francesco Gullo","raw_affiliation_strings":["Yahoo Labs, Barcelona, Spain",", Yahoo! Labs, Barcelona, Spain#TAB#"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Yahoo Labs, Barcelona, Spain","institution_ids":["https://openalex.org/I2800095910"]},{"raw_affiliation_string":", Yahoo! Labs, Barcelona, Spain#TAB#","institution_ids":["https://openalex.org/I1325784139"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5027890537","display_name":"Maria Halkidi","orcid":"https://orcid.org/0000-0001-6282-824X"},"institutions":[{"id":"https://openalex.org/I154757721","display_name":"University of Piraeus","ror":"https://ror.org/02qs84g94","country_code":"GR","type":"education","lineage":["https://openalex.org/I154757721"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"Maria Halkidi","raw_affiliation_strings":["University of Piraeus, Athens, Greece"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Piraeus, Athens, Greece","institution_ids":["https://openalex.org/I154757721"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":6,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"1481","last_page":"1490"},"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/T11478","display_name":"Caching and Content Delivery","score":0.9958000183105469,"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"}},{"id":"https://openalex.org/T10742","display_name":"Peer-to-Peer Network Technologies","score":0.9955000281333923,"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":0.8198550343513489},{"id":"https://openalex.org/keywords/recommender-system","display_name":"Recommender system","score":0.6921569108963013},{"id":"https://openalex.org/keywords/social-network","display_name":"Social network (sociolinguistics)","score":0.5019736289978027},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.4141901433467865},{"id":"https://openalex.org/keywords/social-media","display_name":"Social media","score":0.3611873984336853},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.3289642333984375}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8198550343513489},{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.6921569108963013},{"id":"https://openalex.org/C4727928","wikidata":"https://www.wikidata.org/wiki/Q17164759","display_name":"Social network (sociolinguistics)","level":3,"score":0.5019736289978027},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.4141901433467865},{"id":"https://openalex.org/C518677369","wikidata":"https://www.wikidata.org/wiki/Q202833","display_name":"Social media","level":2,"score":0.3611873984336853},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.3289642333984375}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/2806416.2806559","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2806416.2806559","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 24th ACM International on Conference on Information and Knowledge Management","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Reduced inequalities","id":"https://metadata.un.org/sdg/10","score":0.6499999761581421}],"awards":[{"id":"https://openalex.org/G6373344309","display_name":null,"funder_award_id":"ICT-318809","funder_id":"https://openalex.org/F4320334960","funder_display_name":"Seventh Framework Programme"}],"funders":[{"id":"https://openalex.org/F4320334960","display_name":"Seventh Framework Programme","ror":"https://ror.org/00k4n6c32"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":44,"referenced_works":["https://openalex.org/W1559880292","https://openalex.org/W1736726159","https://openalex.org/W1943015726","https://openalex.org/W1943984513","https://openalex.org/W1944367023","https://openalex.org/W1971373575","https://openalex.org/W1977991182","https://openalex.org/W1984069252","https://openalex.org/W1991635064","https://openalex.org/W1993320088","https://openalex.org/W1996816151","https://openalex.org/W1998076865","https://openalex.org/W2001575213","https://openalex.org/W2002379171","https://openalex.org/W2011039300","https://openalex.org/W2017677078","https://openalex.org/W2032342806","https://openalex.org/W2048508267","https://openalex.org/W2054141820","https://openalex.org/W2054476043","https://openalex.org/W2057047055","https://openalex.org/W2061737399","https://openalex.org/W2061820396","https://openalex.org/W2073235443","https://openalex.org/W2102230199","https://openalex.org/W2107884625","https://openalex.org/W2117889403","https://openalex.org/W2119856161","https://openalex.org/W2139750075","https://openalex.org/W2141403143","https://openalex.org/W2144309280","https://openalex.org/W2145157418","https://openalex.org/W2148933855","https://openalex.org/W2150713082","https://openalex.org/W2164900957","https://openalex.org/W2188869342","https://openalex.org/W2296603104","https://openalex.org/W2569283211","https://openalex.org/W2952347589","https://openalex.org/W2963798452","https://openalex.org/W3103177052","https://openalex.org/W6637359826","https://openalex.org/W6697441746","https://openalex.org/W7015881123"],"related_works":["https://openalex.org/W2748952813","https://openalex.org/W4390273403","https://openalex.org/W4386781444","https://openalex.org/W2150182025","https://openalex.org/W3092950680","https://openalex.org/W3197542405","https://openalex.org/W3125580266","https://openalex.org/W44246808","https://openalex.org/W2120116197","https://openalex.org/W159653547"],"abstract_inverted_index":{"Recommender":[0],"systems":[1],"used":[2],"in":[3],"current":[4],"online":[5],"social":[6,38],"platforms":[7],"make":[8],"recommendations":[9],"by":[10,88],"only":[11],"considering":[12],"how":[13],"relevant":[14,96],"an":[15,40,72],"item":[16,41],"is":[17],"to":[18,29,43,59,63,71],"a":[19,44],"specific":[20],"user":[21,45,55],"but":[22],"they":[23],"ignore":[24],"the":[25,36,49,76],"fact":[26,68],"that,":[27],"thanks":[28],"mechanisms":[30],"like":[31],"sharing":[32],"or":[33],"re-posting":[34],"across":[35],"underlying":[37],"network,":[39],"recommended":[42,62],"i":[46],"propagates":[47],"through":[48],"network":[50],"and":[51,92],"can":[52,82],"reach":[53],"another":[54],"j":[56,64],"without":[57],"needing":[58],"be":[60,84],"explicitly":[61],"too.":[65],"Overlooking":[66],"this":[67],"may":[69],"lead":[70],"inefficient":[73],"use":[74],"of":[75],"limited":[77],"recommendation":[78],"slots.":[79],"These":[80],"slots":[81],"instead":[83],"exploited":[85],"more":[86],"profitably":[87],"avoiding":[89],"unnecessary":[90],"duplicates":[91],"recommending":[93],"other":[94],"equally":[95],"items.":[97]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2021,"cited_by_count":3},{"year":2018,"cited_by_count":1},{"year":2016,"cited_by_count":1}],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2016-06-24T00:00:00"}