{"id":"https://openalex.org/W2795627946","doi":"https://doi.org/10.3390/informatics5020017","title":"A Recommender System for Programming Online Judges Using Fuzzy Information Modeling","display_name":"A Recommender System for Programming Online Judges Using Fuzzy Information Modeling","publication_year":2018,"publication_date":"2018-04-03","ids":{"openalex":"https://openalex.org/W2795627946","doi":"https://doi.org/10.3390/informatics5020017","mag":"2795627946"},"language":"en","primary_location":{"id":"doi:10.3390/informatics5020017","is_oa":true,"landing_page_url":"https://doi.org/10.3390/informatics5020017","pdf_url":"https://www.mdpi.com/2227-9709/5/2/17/pdf?version=1525346939","source":{"id":"https://openalex.org/S2738238905","display_name":"Informatics","issn_l":"2227-9709","issn":["2227-9709"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Informatics","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/2227-9709/5/2/17/pdf?version=1525346939","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5008504376","display_name":"Raciel Yera","orcid":"https://orcid.org/0000-0001-9759-261X"},"institutions":[{"id":"https://openalex.org/I14414995","display_name":"Universidad de Ciego de \u00c1vila","ror":"https://ror.org/00zhs8v21","country_code":"CU","type":"education","lineage":["https://openalex.org/I14414995"]}],"countries":["CU"],"is_corresponding":false,"raw_author_name":"Raciel Yera Toledo","raw_affiliation_strings":["Knowledge Management Center, University of Ciego de \u00c1vila, Carretera a Mor\u00f3n Km 9<sup>1</sup>/<sub>2</sub>, 65100 Ciego de \u00c1vila, Cuba","Knowledge Management Center, University of Ciego de \u00c1vila, Carretera a Mor\u00f3n Km 91/2, 65100 Ciego de \u00c1vila, Cuba"],"affiliations":[{"raw_affiliation_string":"Knowledge Management Center, University of Ciego de \u00c1vila, Carretera a Mor\u00f3n Km 9<sup>1</sup>/<sub>2</sub>, 65100 Ciego de \u00c1vila, Cuba","institution_ids":["https://openalex.org/I14414995"]},{"raw_affiliation_string":"Knowledge Management Center, University of Ciego de \u00c1vila, Carretera a Mor\u00f3n Km 91/2, 65100 Ciego de \u00c1vila, Cuba","institution_ids":["https://openalex.org/I14414995"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5066758603","display_name":"Yail\u00e9 Caballero Mota","orcid":"https://orcid.org/0000-0002-6725-5812"},"institutions":[{"id":"https://openalex.org/I78807220","display_name":"University of Camag\u00fcey","ror":"https://ror.org/040qyzk67","country_code":"CU","type":"education","lineage":["https://openalex.org/I78807220"]}],"countries":["CU"],"is_corresponding":false,"raw_author_name":"Yail\u00e9 Caballero Mota","raw_affiliation_strings":["Department of Computer Science, University of Camag\u00fcey, Circun. Km 5<sup>1</sup>/<sub>2</sub>, 70100 Camag\u00fcey, Cuba","Department of Computer Science, University of Camag\u00fcey, Circun. Km 51/2, 70100 Camag\u00fcey, Cuba"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science, University of Camag\u00fcey, Circun. Km 5<sup>1</sup>/<sub>2</sub>, 70100 Camag\u00fcey, Cuba","institution_ids":["https://openalex.org/I78807220"]},{"raw_affiliation_string":"Department of Computer Science, University of Camag\u00fcey, Circun. Km 51/2, 70100 Camag\u00fcey, Cuba","institution_ids":["https://openalex.org/I78807220"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5009797333","display_name":"Luis Mart\u0131\u0301nez","orcid":"https://orcid.org/0000-0003-4245-8813"},"institutions":[{"id":"https://openalex.org/I191420491","display_name":"Universidad de Ja\u00e9n","ror":"https://ror.org/0122p5f64","country_code":"ES","type":"education","lineage":["https://openalex.org/I191420491"]}],"countries":["ES"],"is_corresponding":true,"raw_author_name":"Luis Mart\u00ednez","raw_affiliation_strings":["Department of Computer Science, University of Ja\u00e9n, 23071 Ja\u00e9n, Spain"],"affiliations":[{"raw_affiliation_string":"Department of Computer Science, University of Ja\u00e9n, 23071 Ja\u00e9n, Spain","institution_ids":["https://openalex.org/I191420491"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5009797333"],"corresponding_institution_ids":["https://openalex.org/I191420491"],"apc_list":{"value":1600,"currency":"CHF","value_usd":1732},"apc_paid":{"value":1600,"currency":"CHF","value_usd":1732},"fwci":5.6724,"has_fulltext":true,"cited_by_count":30,"citation_normalized_percentile":{"value":0.95616501,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"5","issue":"2","first_page":"17","last_page":"17"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11122","display_name":"Online Learning and Analytics","score":0.9983000159263611,"subfield":{"id":"https://openalex.org/subfields/1706","display_name":"Computer Science Applications"},"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/T11122","display_name":"Online Learning and Analytics","score":0.9983000159263611,"subfield":{"id":"https://openalex.org/subfields/1706","display_name":"Computer Science Applications"},"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/T10203","display_name":"Recommender Systems and Techniques","score":0.9970999956130981,"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/T11902","display_name":"Intelligent Tutoring Systems and Adaptive Learning","score":0.991100013256073,"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":0.776975154876709},{"id":"https://openalex.org/keywords/information-overload","display_name":"Information overload","score":0.7578531503677368},{"id":"https://openalex.org/keywords/pace","display_name":"Pace","score":0.749445378780365},{"id":"https://openalex.org/keywords/recommender-system","display_name":"Recommender system","score":0.7397583723068237},{"id":"https://openalex.org/keywords/fuzzy-logic","display_name":"Fuzzy logic","score":0.5111544728279114},{"id":"https://openalex.org/keywords/code","display_name":"Code (set theory)","score":0.4379256069660187},{"id":"https://openalex.org/keywords/world-wide-web","display_name":"World Wide Web","score":0.3446519374847412},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.3405822217464447},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.28980547189712524},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.10992130637168884},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.10874766111373901}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.776975154876709},{"id":"https://openalex.org/C186625053","wikidata":"https://www.wikidata.org/wiki/Q1130191","display_name":"Information overload","level":2,"score":0.7578531503677368},{"id":"https://openalex.org/C2777526511","wikidata":"https://www.wikidata.org/wiki/Q691543","display_name":"Pace","level":2,"score":0.749445378780365},{"id":"https://openalex.org/C557471498","wikidata":"https://www.wikidata.org/wiki/Q554950","display_name":"Recommender system","level":2,"score":0.7397583723068237},{"id":"https://openalex.org/C58166","wikidata":"https://www.wikidata.org/wiki/Q224821","display_name":"Fuzzy logic","level":2,"score":0.5111544728279114},{"id":"https://openalex.org/C2776760102","wikidata":"https://www.wikidata.org/wiki/Q5139990","display_name":"Code (set theory)","level":3,"score":0.4379256069660187},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.3446519374847412},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.3405822217464447},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.28980547189712524},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.10992130637168884},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.10874766111373901},{"id":"https://openalex.org/C13280743","wikidata":"https://www.wikidata.org/wiki/Q131089","display_name":"Geodesy","level":1,"score":0.0},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.3390/informatics5020017","is_oa":true,"landing_page_url":"https://doi.org/10.3390/informatics5020017","pdf_url":"https://www.mdpi.com/2227-9709/5/2/17/pdf?version=1525346939","source":{"id":"https://openalex.org/S2738238905","display_name":"Informatics","issn_l":"2227-9709","issn":["2227-9709"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Informatics","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:14b756ca2369477ebf83a511c36552f5","is_oa":true,"landing_page_url":"https://doaj.org/article/14b756ca2369477ebf83a511c36552f5","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Informatics, Vol 5, Iss 2, p 17 (2018)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/2227-9709/5/2/17/","is_oa":true,"landing_page_url":"https://dx.doi.org/10.3390/informatics5020017","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Informatics; Volume 5; Issue 2; Pages: 17","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/informatics5020017","is_oa":true,"landing_page_url":"https://doi.org/10.3390/informatics5020017","pdf_url":"https://www.mdpi.com/2227-9709/5/2/17/pdf?version=1525346939","source":{"id":"https://openalex.org/S2738238905","display_name":"Informatics","issn_l":"2227-9709","issn":["2227-9709"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Informatics","raw_type":"journal-article"},"sustainable_development_goals":[{"score":0.46000000834465027,"display_name":"Quality Education","id":"https://metadata.un.org/sdg/4"}],"awards":[{"id":"https://openalex.org/G2476071254","display_name":null,"funder_award_id":"TIN2015-66524-P","funder_id":"https://openalex.org/F4320321837","funder_display_name":"Ministerio de Econom\u00eda y Competitividad"}],"funders":[{"id":"https://openalex.org/F4320321837","display_name":"Ministerio de Econom\u00eda y Competitividad","ror":"https://ror.org/034900433"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2795627946.pdf","grobid_xml":"https://content.openalex.org/works/W2795627946.grobid-xml"},"referenced_works_count":45,"referenced_works":["https://openalex.org/W1520017476","https://openalex.org/W1663508306","https://openalex.org/W1966743391","https://openalex.org/W1971654081","https://openalex.org/W1996336859","https://openalex.org/W2002357163","https://openalex.org/W2009152073","https://openalex.org/W2025605741","https://openalex.org/W2030808931","https://openalex.org/W2033317745","https://openalex.org/W2060749251","https://openalex.org/W2070405152","https://openalex.org/W2073474519","https://openalex.org/W2079926388","https://openalex.org/W2091000951","https://openalex.org/W2091709755","https://openalex.org/W2099135712","https://openalex.org/W2103898467","https://openalex.org/W2106702649","https://openalex.org/W2118934678","https://openalex.org/W2121710227","https://openalex.org/W2128371040","https://openalex.org/W2171960770","https://openalex.org/W2187744578","https://openalex.org/W2251849223","https://openalex.org/W2286386431","https://openalex.org/W2299883980","https://openalex.org/W2311090125","https://openalex.org/W2318604272","https://openalex.org/W2404272368","https://openalex.org/W2418348333","https://openalex.org/W2479485957","https://openalex.org/W2529209482","https://openalex.org/W2574967539","https://openalex.org/W2592356053","https://openalex.org/W2604311458","https://openalex.org/W2678138140","https://openalex.org/W2767908697","https://openalex.org/W2770468485","https://openalex.org/W2914531615","https://openalex.org/W2963492842","https://openalex.org/W2998206837","https://openalex.org/W6677933091","https://openalex.org/W6679266992","https://openalex.org/W6686950162"],"related_works":["https://openalex.org/W4251329182","https://openalex.org/W1599110641","https://openalex.org/W1549403601","https://openalex.org/W2497510784","https://openalex.org/W4252183363","https://openalex.org/W2787177576","https://openalex.org/W2078352417","https://openalex.org/W2418053903","https://openalex.org/W2098758514","https://openalex.org/W1575740715"],"abstract_inverted_index":{"Programming":[0],"online":[1,103,131,152],"judges":[2],"(POJs)":[3],"are":[4,15,35],"an":[5],"emerging":[6],"application":[7],"scenario":[8],"in":[9,20,61,101,149],"e-learning":[10,16],"recommendation":[11,90,141,163],"areas.":[12],"Specifically,":[13,155],"they":[14,34,40],"tools":[17,110],"usually":[18],"used":[19],"programming":[21,37,102,130,151],"practices":[22],"for":[23,161],"the":[24,62,64,66,69,106,113,122,136,150,156],"automatic":[25],"evaluation":[26,120],"of":[27,45,68,108,121],"source":[28],"code":[29],"developed":[30],"by":[31,51,96],"students":[32,52],"when":[33],"solving":[36],"problems.":[38],"Usually,":[39],"contain":[41],"a":[42,83,89,129],"large":[43],"collection":[44],"such":[46],"problems,":[47],"to":[48,72,75,92,99,116],"be":[49],"solved":[50],"at":[53],"their":[54],"own":[55],"personalized":[56],"pace.":[57],"The":[58,119],"more":[59],"problems":[60,98],"POJ":[63],"harder":[65],"selection":[67],"right":[70],"problem":[71],"solve":[73,100],"according":[74],"previous":[76,140],"users":[77],"performance,":[78],"causing":[79],"information":[80],"overload":[81],"and":[82,133],"widespread":[84],"discouragement.":[85],"This":[86],"paper":[87],"presents":[88],"framework":[91],"mitigate":[93],"this":[94,117],"issue":[95],"suggesting":[97],"judges,":[104],"through":[105],"use":[107],"fuzzy":[109],"which":[111,143],"manage":[112],"uncertainty":[114,147],"related":[115],"scenario.":[118],"proposal":[123],"uses":[124],"real":[125],"data":[126],"obtained":[127,160],"from":[128],"judge,":[132],"shows":[134],"that":[135],"new":[137],"approach":[138],"improves":[139],"strategies":[142],"do":[144],"not":[145],"consider":[146],"management":[148],"judge":[153],"scenarios.":[154],"best":[157],"results":[158],"were":[159],"short":[162],"lists.":[164]},"counts_by_year":[{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":6},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":5},{"year":2020,"cited_by_count":7},{"year":2019,"cited_by_count":5},{"year":2018,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
