{"id":"https://openalex.org/W2966818758","doi":"https://doi.org/10.1609/aaai.v33i01.33019534","title":"Context-Tree Recommendation vs Matrix-Factorization: Algorithm Selection and Live Users Evaluation","display_name":"Context-Tree Recommendation vs Matrix-Factorization: Algorithm Selection and Live Users Evaluation","publication_year":2019,"publication_date":"2019-07-17","ids":{"openalex":"https://openalex.org/W2966818758","doi":"https://doi.org/10.1609/aaai.v33i01.33019534","mag":"2966818758"},"language":"en","primary_location":{"id":"doi:10.1609/aaai.v33i01.33019534","is_oa":true,"landing_page_url":"https://doi.org/10.1609/aaai.v33i01.33019534","pdf_url":null,"source":{"id":"https://openalex.org/S4210191458","display_name":"Proceedings of the AAAI Conference on Artificial Intelligence","issn_l":"2159-5399","issn":["2159-5399","2374-3468"],"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/P4310320058","host_organization_name":"Association for the Advancement of Artificial Intelligence","host_organization_lineage":["https://openalex.org/P4310320058"],"host_organization_lineage_names":["Association for the Advancement of Artificial Intelligence"],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the AAAI Conference on Artificial Intelligence","raw_type":"journal-article"},"type":"conference-paper","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"diamond","oa_url":"https://doi.org/10.1609/aaai.v33i01.33019534","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5008137624","display_name":"St\u00e9phane Martin","orcid":null},"institutions":[{"id":"https://openalex.org/I5124864","display_name":"\u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne","ror":"https://ror.org/02s376052","country_code":"CH","type":"education","lineage":["https://openalex.org/I2799323385","https://openalex.org/I5124864"]}],"countries":["CH"],"is_corresponding":false,"raw_author_name":"St\u00e9phane Martin","raw_affiliation_strings":["\u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"\u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne","institution_ids":["https://openalex.org/I5124864"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5060427576","display_name":"Boi Faltings","orcid":"https://orcid.org/0000-0002-7188-7230"},"institutions":[{"id":"https://openalex.org/I5124864","display_name":"\u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne","ror":"https://ror.org/02s376052","country_code":"CH","type":"education","lineage":["https://openalex.org/I2799323385","https://openalex.org/I5124864"]}],"countries":["CH"],"is_corresponding":false,"raw_author_name":"Boi Faltings","raw_affiliation_strings":["\u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"\u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne","institution_ids":["https://openalex.org/I5124864"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5057741607","display_name":"Vincent Schickel","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Vincent Schickel","raw_affiliation_strings":["Prediggo SA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Prediggo SA","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":true,"cited_by_count":1,"citation_normalized_percentile":{"value":0.10855859,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"33","issue":"01","first_page":"9534","last_page":"9540"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10203","display_name":"Recommender Systems and Techniques","score":1.0,"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":1.0,"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":0.9891999959945679,"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/T10028","display_name":"Topic Modeling","score":0.9876999855041504,"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":0.8033175468444824},{"id":"https://openalex.org/keywords/recommender-system","display_name":"Recommender system","score":0.7811383008956909},{"id":"https://openalex.org/keywords/scalability","display_name":"Scalability","score":0.6543224453926086},{"id":"https://openalex.org/keywords/matrix-decomposition","display_name":"Matrix decomposition","score":0.59615558385849},{"id":"https://openalex.org/keywords/context","display_name":"Context (archaeology)","score":0.5850865840911865},{"id":"https://openalex.org/keywords/selection","display_name":"Selection (genetic algorithm)","score":0.49183130264282227},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.4756826162338257},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.4696587324142456},{"id":"https://openalex.org/keywords/collaborative-filtering","display_name":"Collaborative filtering","score":0.4674352705478668},{"id":"https://openalex.org/keywords/factorization","display_name":"Factorization","score":0.4453248083591461},{"id":"https://openalex.org/keywords/markov-chain","display_name":"Markov chain","score":0.4333387613296509},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.4106219708919525},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.3940502107143402},{"id":"https://openalex.org/keywords/information-retrieval","display_name":"Information retrieval","score":0.364992618560791},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.11160615086555481}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8033175468444824},{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.7811383008956909},{"id":"https://openalex.org/C48044578","wikidata":"https://www.wikidata.org/wiki/Q727490","display_name":"Scalability","level":2,"score":0.6543224453926086},{"id":"https://openalex.org/C42355184","wikidata":"https://www.wikidata.org/wiki/Q1361088","display_name":"Matrix decomposition","level":3,"score":0.59615558385849},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.5850865840911865},{"id":"https://openalex.org/C81917197","wikidata":"https://www.wikidata.org/wiki/Q628760","display_name":"Selection (genetic algorithm)","level":2,"score":0.49183130264282227},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.4756826162338257},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4696587324142456},{"id":"https://openalex.org/C21569690","wikidata":"https://www.wikidata.org/wiki/Q94702","display_name":"Collaborative filtering","level":3,"score":0.4674352705478668},{"id":"https://openalex.org/C187834632","wikidata":"https://www.wikidata.org/wiki/Q188804","display_name":"Factorization","level":2,"score":0.4453248083591461},{"id":"https://openalex.org/C98763669","wikidata":"https://www.wikidata.org/wiki/Q176645","display_name":"Markov chain","level":2,"score":0.4333387613296509},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.4106219708919525},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.3940502107143402},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.364992618560791},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.11160615086555481},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C158693339","wikidata":"https://www.wikidata.org/wiki/Q190524","display_name":"Eigenvalues and eigenvectors","level":2,"score":0.0},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"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/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1609/aaai.v33i01.33019534","is_oa":true,"landing_page_url":"https://doi.org/10.1609/aaai.v33i01.33019534","pdf_url":null,"source":{"id":"https://openalex.org/S4210191458","display_name":"Proceedings of the AAAI Conference on Artificial Intelligence","issn_l":"2159-5399","issn":["2159-5399","2374-3468"],"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/P4310320058","host_organization_name":"Association for the Advancement of Artificial Intelligence","host_organization_lineage":["https://openalex.org/P4310320058"],"host_organization_lineage_names":["Association for the Advancement of Artificial Intelligence"],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the AAAI Conference on Artificial Intelligence","raw_type":"journal-article"},{"id":"pmh:oai:ojs.aaai.org:article/5012","is_oa":true,"landing_page_url":"https://ojs.aaai.org/index.php/AAAI/article/view/5012","pdf_url":"https://ojs.aaai.org/index.php/AAAI/article/download/5012/4885","source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"2159-5399","raw_type":"info:eu-repo/semantics/article"},{"id":"pmh:oai:infoscience.epfl.ch:269005","is_oa":true,"landing_page_url":"https://infoscience.epfl.ch/handle/20.500.14299/159809","pdf_url":null,"source":{"id":"https://openalex.org/S4306400487","display_name":"Infoscience (Ecole Polytechnique F\u00e9d\u00e9rale de Lausanne)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I5124864","host_organization_name":"\u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne","host_organization_lineage":["https://openalex.org/I5124864"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-nd","license_id":"https://openalex.org/licenses/cc-by-nc-nd","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"conference proceedings"}],"best_oa_location":{"id":"doi:10.1609/aaai.v33i01.33019534","is_oa":true,"landing_page_url":"https://doi.org/10.1609/aaai.v33i01.33019534","pdf_url":null,"source":{"id":"https://openalex.org/S4210191458","display_name":"Proceedings of the AAAI Conference on Artificial Intelligence","issn_l":"2159-5399","issn":["2159-5399","2374-3468"],"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/P4310320058","host_organization_name":"Association for the Advancement of Artificial Intelligence","host_organization_lineage":["https://openalex.org/P4310320058"],"host_organization_lineage_names":["Association for the Advancement of Artificial Intelligence"],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the AAAI Conference on Artificial Intelligence","raw_type":"journal-article"},"sustainable_development_goals":[{"score":0.5299999713897705,"display_name":"Industry, innovation and infrastructure","id":"https://metadata.un.org/sdg/9"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320320998","display_name":"Kommission f\u00fcr Technologie und Innovation","ror":"https://ror.org/012y9zp98"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":42,"referenced_works":["https://openalex.org/W201528229","https://openalex.org/W1511537177","https://openalex.org/W1511814458","https://openalex.org/W1652319903","https://openalex.org/W1690919088","https://openalex.org/W1832221731","https://openalex.org/W1994389483","https://openalex.org/W2022229384","https://openalex.org/W2025605741","https://openalex.org/W2038715966","https://openalex.org/W2042271184","https://openalex.org/W2045471213","https://openalex.org/W2054141820","https://openalex.org/W2082967074","https://openalex.org/W2096066838","https://openalex.org/W2101409192","https://openalex.org/W2109421086","https://openalex.org/W2114458957","https://openalex.org/W2119047110","https://openalex.org/W2129995544","https://openalex.org/W2134708176","https://openalex.org/W2161628678","https://openalex.org/W2163162311","https://openalex.org/W2163294786","https://openalex.org/W2165949563","https://openalex.org/W2223706684","https://openalex.org/W2513020047","https://openalex.org/W2789084759","https://openalex.org/W2911940095","https://openalex.org/W3102297550","https://openalex.org/W3104314953","https://openalex.org/W6608269092","https://openalex.org/W6636888537","https://openalex.org/W6637295978","https://openalex.org/W6656731880","https://openalex.org/W6671527339","https://openalex.org/W6676393266","https://openalex.org/W6677536156","https://openalex.org/W6679911850","https://openalex.org/W6684173853","https://openalex.org/W6748449045","https://openalex.org/W6758964751"],"related_works":["https://openalex.org/W1484355083","https://openalex.org/W2772628444","https://openalex.org/W4220714703","https://openalex.org/W2735929803","https://openalex.org/W2170391450","https://openalex.org/W2098758514","https://openalex.org/W3008845055","https://openalex.org/W2041004656","https://openalex.org/W135044020","https://openalex.org/W4376854386"],"abstract_inverted_index":{"We":[0],"describe":[1],"the":[2,25,42,51,55,63,69,81,84,88,101,105,130,139],"selection,":[3],"implementation":[4],"and":[5,67,91,112,115,137],"online":[6,153],"evaluation":[7],"of":[8,28,41,71,83,95,110,143],"two":[9,72,106],"e-commerce":[10],"recommender":[11,52],"systems":[12],"developed":[13],"with":[14],"our":[15],"partner":[16],"company,":[17],"Prediggo.":[18],"The":[19,34],"first":[20],"one":[21],"is":[22,37,47,132,147],"based":[23],"on":[24,76],"novel":[26,39],"method":[27],"Bayesian":[29],"Variable-order":[30],"Markov":[31],"Modeling":[32],"(BVMM).":[33],"second,":[35],"SSAGD,":[36],"a":[38,118],"variant":[40],"Matrix-Factorization":[43],"technique":[44],"(MF),":[45],"which":[46],"considered":[48],"state-of-the-art":[49],"in":[50,108,121,152],"literature.We":[53],"discuss":[54],"offline":[56],"tests":[57,74],"we":[58,98],"carried":[59],"out":[60],"to":[61,117],"select":[62],"best":[64],"MF":[65,125],"variant,":[66],"present":[68],"results":[70],"A/B":[73],"performed":[75],"live":[77],"ecommerce":[78],"websites":[79],"after":[80],"deployment":[82],"new":[85,89],"algorithms.":[86],"Comparing":[87],"recommenders":[90],"Prediggo\u2019s":[92],"proprietary":[93],"algorithm":[94],"Ontology":[96],"Filtering,":[97],"show":[99],"that":[100],"BVMM":[102,131],"significantly":[103,134],"outperforms":[104],"others":[107],"terms":[109],"CTR":[111],"prediction":[113],"speed,":[114],"leads":[116],"strong":[119],"increase":[120],"recommendation-mediated":[122],"sales.":[123],"Although":[124],"exhibits":[126],"reasonably":[127],"good":[128],"accuracy,":[129],"still":[133],"more":[135],"accurate":[136],"avoids":[138],"high":[140],"memory":[141],"requirements":[142],"MF.":[144],"This":[145],"scalability":[146],"essential":[148],"for":[149],"its":[150],"application":[151],"businesses.":[154]},"counts_by_year":[{"year":2012,"cited_by_count":1}],"updated_date":"2026-08-26T07:47:46.906454","created_date":"2025-10-10T00:00:00"}