{"id":"https://openalex.org/W2024695185","doi":"https://doi.org/10.1007/s10791-012-9213-0","title":"Using rating matrix compression techniques to speed up collaborative recommendations","display_name":"Using rating matrix compression techniques to speed up collaborative recommendations","publication_year":2012,"publication_date":"2012-10-29","ids":{"openalex":"https://openalex.org/W2024695185","doi":"https://doi.org/10.1007/s10791-012-9213-0","mag":"2024695185"},"language":"en","primary_location":{"id":"doi:10.1007/s10791-012-9213-0","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s10791-012-9213-0","pdf_url":null,"source":{"id":"https://openalex.org/S79460864","display_name":"Information Retrieval","issn_l":"1386-4564","issn":["1386-4564","1573-7659"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Information Retrieval","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/A5050444745","display_name":"Vreixo Formoso","orcid":"https://orcid.org/0000-0003-4390-7596"},"institutions":[{"id":"https://openalex.org/I11019714","display_name":"Universidade da Coru\u00f1a","ror":"https://ror.org/01qckj285","country_code":"ES","type":"education","lineage":["https://openalex.org/I11019714"]}],"countries":["ES"],"is_corresponding":true,"raw_author_name":"Vreixo Formoso","raw_affiliation_strings":["Department of Information and Communication Technologies, Facultad de Inform\u00e1tica, Campus de Elvina s/n, 15071, Coru\u00f1a, Spain","Department of Information and Communication Technologies, Facultad de Inform\u00e1tica, Coru\u00f1a, Spain 15071#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Information and Communication Technologies, Facultad de Inform\u00e1tica, Campus de Elvina s/n, 15071, Coru\u00f1a, Spain","institution_ids":["https://openalex.org/I11019714"]},{"raw_affiliation_string":"Department of Information and Communication Technologies, Facultad de Inform\u00e1tica, Coru\u00f1a, Spain 15071#TAB#","institution_ids":["https://openalex.org/I11019714"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101528704","display_name":"Diego Fern\u00e1ndez","orcid":"https://orcid.org/0000-0002-6577-8951"},"institutions":[{"id":"https://openalex.org/I11019714","display_name":"Universidade da Coru\u00f1a","ror":"https://ror.org/01qckj285","country_code":"ES","type":"education","lineage":["https://openalex.org/I11019714"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Diego Fern\u00e1ndez","raw_affiliation_strings":["Department of Information and Communication Technologies, Facultad de Inform\u00e1tica, Campus de Elvina s/n, 15071, Coru\u00f1a, Spain","Department of Information and Communication Technologies, Facultad de Inform\u00e1tica, Coru\u00f1a, Spain 15071#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Information and Communication Technologies, Facultad de Inform\u00e1tica, Campus de Elvina s/n, 15071, Coru\u00f1a, Spain","institution_ids":["https://openalex.org/I11019714"]},{"raw_affiliation_string":"Department of Information and Communication Technologies, Facultad de Inform\u00e1tica, Coru\u00f1a, Spain 15071#TAB#","institution_ids":["https://openalex.org/I11019714"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5070668196","display_name":"Fidel Cacheda","orcid":"https://orcid.org/0000-0002-6438-1661"},"institutions":[{"id":"https://openalex.org/I11019714","display_name":"Universidade da Coru\u00f1a","ror":"https://ror.org/01qckj285","country_code":"ES","type":"education","lineage":["https://openalex.org/I11019714"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Fidel Cacheda","raw_affiliation_strings":["Department of Information and Communication Technologies, Facultad de Inform\u00e1tica, Campus de Elvina s/n, 15071, Coru\u00f1a, Spain","Department of Information and Communication Technologies, Facultad de Inform\u00e1tica, Coru\u00f1a, Spain 15071#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Information and Communication Technologies, Facultad de Inform\u00e1tica, Campus de Elvina s/n, 15071, Coru\u00f1a, Spain","institution_ids":["https://openalex.org/I11019714"]},{"raw_affiliation_string":"Department of Information and Communication Technologies, Facultad de Inform\u00e1tica, Coru\u00f1a, Spain 15071#TAB#","institution_ids":["https://openalex.org/I11019714"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5056774257","display_name":"V\u00edctor Carneiro","orcid":"https://orcid.org/0000-0002-7536-9422"},"institutions":[{"id":"https://openalex.org/I11019714","display_name":"Universidade da Coru\u00f1a","ror":"https://ror.org/01qckj285","country_code":"ES","type":"education","lineage":["https://openalex.org/I11019714"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Victor Carneiro","raw_affiliation_strings":["Department of Information and Communication Technologies, Facultad de Inform\u00e1tica, Campus de Elvina s/n, 15071, Coru\u00f1a, Spain","Department of Information and Communication Technologies, Facultad de Inform\u00e1tica, Coru\u00f1a, Spain 15071#TAB#"],"affiliations":[{"raw_affiliation_string":"Department of Information and Communication Technologies, Facultad de Inform\u00e1tica, Campus de Elvina s/n, 15071, Coru\u00f1a, Spain","institution_ids":["https://openalex.org/I11019714"]},{"raw_affiliation_string":"Department of Information and Communication Technologies, Facultad de Inform\u00e1tica, Coru\u00f1a, Spain 15071#TAB#","institution_ids":["https://openalex.org/I11019714"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5050444745"],"corresponding_institution_ids":["https://openalex.org/I11019714"],"apc_list":null,"apc_paid":null,"fwci":0.7416,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.81543118,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"16","issue":"6","first_page":"680","last_page":"696"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10203","display_name":"Recommender Systems and Techniques","score":0.9957000017166138,"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":0.9957000017166138,"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/T10538","display_name":"Data Mining Algorithms and Applications","score":0.958299994468689,"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/T12384","display_name":"Customer churn and segmentation","score":0.9376000165939331,"subfield":{"id":"https://openalex.org/subfields/1406","display_name":"Marketing"},"field":{"id":"https://openalex.org/fields/14","display_name":"Business, Management and Accounting"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8412410020828247},{"id":"https://openalex.org/keywords/collaborative-filtering","display_name":"Collaborative filtering","score":0.7471405863761902},{"id":"https://openalex.org/keywords/search-engine-indexing","display_name":"Search engine indexing","score":0.6024933457374573},{"id":"https://openalex.org/keywords/identifier","display_name":"Identifier","score":0.5801195502281189},{"id":"https://openalex.org/keywords/coding","display_name":"Coding (social sciences)","score":0.5540527105331421},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.535355806350708},{"id":"https://openalex.org/keywords/recommender-system","display_name":"Recommender system","score":0.5283677577972412},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.4793294668197632},{"id":"https://openalex.org/keywords/speedup","display_name":"Speedup","score":0.4667793810367584},{"id":"https://openalex.org/keywords/compression","display_name":"Compression (physics)","score":0.4512816369533539},{"id":"https://openalex.org/keywords/compression-ratio","display_name":"Compression ratio","score":0.4397842288017273},{"id":"https://openalex.org/keywords/sparse-matrix","display_name":"Sparse matrix","score":0.4334869980812073},{"id":"https://openalex.org/keywords/data-compression","display_name":"Data compression","score":0.42000871896743774},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.29320937395095825},{"id":"https://openalex.org/keywords/parallel-computing","display_name":"Parallel computing","score":0.10580101609230042},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.0956331193447113},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.08957207202911377},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.07686296105384827}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8412410020828247},{"id":"https://openalex.org/C21569690","wikidata":"https://www.wikidata.org/wiki/Q94702","display_name":"Collaborative filtering","level":3,"score":0.7471405863761902},{"id":"https://openalex.org/C75165309","wikidata":"https://www.wikidata.org/wiki/Q2258979","display_name":"Search engine indexing","level":2,"score":0.6024933457374573},{"id":"https://openalex.org/C154504017","wikidata":"https://www.wikidata.org/wiki/Q853614","display_name":"Identifier","level":2,"score":0.5801195502281189},{"id":"https://openalex.org/C179518139","wikidata":"https://www.wikidata.org/wiki/Q5140297","display_name":"Coding (social sciences)","level":2,"score":0.5540527105331421},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.535355806350708},{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.5283677577972412},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.4793294668197632},{"id":"https://openalex.org/C68339613","wikidata":"https://www.wikidata.org/wiki/Q1549489","display_name":"Speedup","level":2,"score":0.4667793810367584},{"id":"https://openalex.org/C180016635","wikidata":"https://www.wikidata.org/wiki/Q2712821","display_name":"Compression (physics)","level":2,"score":0.4512816369533539},{"id":"https://openalex.org/C25797200","wikidata":"https://www.wikidata.org/wiki/Q828137","display_name":"Compression ratio","level":3,"score":0.4397842288017273},{"id":"https://openalex.org/C56372850","wikidata":"https://www.wikidata.org/wiki/Q1050404","display_name":"Sparse matrix","level":3,"score":0.4334869980812073},{"id":"https://openalex.org/C78548338","wikidata":"https://www.wikidata.org/wiki/Q2493","display_name":"Data compression","level":2,"score":0.42000871896743774},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.29320937395095825},{"id":"https://openalex.org/C173608175","wikidata":"https://www.wikidata.org/wiki/Q232661","display_name":"Parallel computing","level":1,"score":0.10580101609230042},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0956331193447113},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.08957207202911377},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.07686296105384827},{"id":"https://openalex.org/C171146098","wikidata":"https://www.wikidata.org/wiki/Q124192","display_name":"Automotive engineering","level":1,"score":0.0},{"id":"https://openalex.org/C159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","level":1,"score":0.0},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.0},{"id":"https://openalex.org/C511840579","wikidata":"https://www.wikidata.org/wiki/Q12757","display_name":"Internal combustion engine","level":2,"score":0.0},{"id":"https://openalex.org/C163716315","wikidata":"https://www.wikidata.org/wiki/Q901177","display_name":"Gaussian","level":2,"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/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/s10791-012-9213-0","is_oa":false,"landing_page_url":"https://doi.org/10.1007/s10791-012-9213-0","pdf_url":null,"source":{"id":"https://openalex.org/S79460864","display_name":"Information Retrieval","issn_l":"1386-4564","issn":["1386-4564","1573-7659"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Information Retrieval","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320320300","display_name":"European Commission","ror":"https://ror.org/00k4n6c32"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":33,"referenced_works":["https://openalex.org/W1488971269","https://openalex.org/W1524501441","https://openalex.org/W1532325895","https://openalex.org/W1669813703","https://openalex.org/W1690919088","https://openalex.org/W1980344365","https://openalex.org/W1981868151","https://openalex.org/W2004182115","https://openalex.org/W2042130547","https://openalex.org/W2042281163","https://openalex.org/W2043770080","https://openalex.org/W2060108852","https://openalex.org/W2065472179","https://openalex.org/W2076270243","https://openalex.org/W2081332171","https://openalex.org/W2110325612","https://openalex.org/W2115613939","https://openalex.org/W2115810705","https://openalex.org/W2118079529","https://openalex.org/W2121710227","https://openalex.org/W2128777897","https://openalex.org/W2136070674","https://openalex.org/W2155106456","https://openalex.org/W2159094788","https://openalex.org/W2160484851","https://openalex.org/W2162027163","https://openalex.org/W2341535507","https://openalex.org/W2621280964","https://openalex.org/W4213009331","https://openalex.org/W4230511558","https://openalex.org/W4244404635","https://openalex.org/W6645555587","https://openalex.org/W6703949738"],"related_works":["https://openalex.org/W2058965144","https://openalex.org/W2164382479","https://openalex.org/W98480971","https://openalex.org/W2150291671","https://openalex.org/W2027972911","https://openalex.org/W2146343568","https://openalex.org/W2013643406","https://openalex.org/W2157978810","https://openalex.org/W2597809628","https://openalex.org/W3046370962"],"abstract_inverted_index":null,"counts_by_year":[{"year":2021,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}