{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T04:26:18Z","timestamp":1772252778484,"version":"3.50.1"},"reference-count":91,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2021,10,21]],"date-time":"2021-10-21T00:00:00Z","timestamp":1634774400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"This work was supported by national funds through the Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia, I.P.","award":["UIDB\/05064\/2020"],"award-info":[{"award-number":["UIDB\/05064\/2020"]}]},{"name":"ILIND\u2013Instituto Lus\u00f3fono de Investiga\u00e7\u00e3o e Desenvolvimento, under projects COFAC\/ILIND\/COPELABS","award":["COFAC\/ILIND\/COPELABS\/1\/2020 and COFAC\/ILIND\/COPELABS\/3\/2020."],"award-info":[{"award-number":["COFAC\/ILIND\/COPELABS\/1\/2020 and COFAC\/ILIND\/COPELABS\/3\/2020."]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Education Sciences"],"abstract":"<jats:p>Distance learning has assumed a relevant role in the educational scenario. The use of Virtual Learning Environments contributes to obtaining a substantial amount of educational data. In this sense, the analyzed data generate knowledge used by institutions to assist managers and professors in strategic planning and teaching. The discovery of students\u2019 behaviors enables a wide variety of intelligent services for assisting in the learning process. This article presents a literature review in order to identify the intelligent services applied in distance learning. The research covers the period from January 2010 to May 2021. The initial search found 1316 articles, among which 51 were selected for further studies. Considering the selected articles, 33% (17\/51) focus on learning systems, 35% (18\/51) propose recommendation systems, 26% (13\/51) approach predictive systems or models, and 6% (3\/51) use assessment tools. This review allowed for the observation that the principal services offered are recommendation systems and learning systems. In these services, the analysis of student profiles stands out to identify patterns of behavior, detect low performance, and identify probabilities of dropouts from courses.<\/jats:p>","DOI":"10.3390\/educsci11110666","type":"journal-article","created":{"date-parts":[[2021,10,21]],"date-time":"2021-10-21T14:37:48Z","timestamp":1634827068000},"page":"666","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":17,"title":["A Literature Review on Intelligent Services Applied to Distance Learning"],"prefix":"10.3390","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9480-8005","authenticated-orcid":false,"given":"Lidia Martins","family":"da Silva","sequence":"first","affiliation":[{"name":"Applied Computing Graduate Program, University of Vale do Rio dos Sinos, Av. Unisinos 950, Bairro Cristo Rei, S\u00e3o Leopoldo 93022-750, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9560-0874","authenticated-orcid":false,"given":"Lucas Pfeiffer Salom\u00e3o","family":"Dias","sequence":"additional","affiliation":[{"name":"Applied Computing Graduate Program, University of Vale do Rio dos Sinos, Av. Unisinos 950, Bairro Cristo Rei, S\u00e3o Leopoldo 93022-750, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8140-5621","authenticated-orcid":false,"given":"Sandro","family":"Rigo","sequence":"additional","affiliation":[{"name":"Applied Computing Graduate Program, University of Vale do Rio dos Sinos, Av. Unisinos 950, Bairro Cristo Rei, S\u00e3o Leopoldo 93022-750, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0358-2056","authenticated-orcid":false,"given":"Jorge Luis Vict\u00f3ria","family":"Barbosa","sequence":"additional","affiliation":[{"name":"Applied Computing Graduate Program, University of Vale do Rio dos Sinos, Av. Unisinos 950, Bairro Cristo Rei, S\u00e3o Leopoldo 93022-750, Brazil"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4514-1371","authenticated-orcid":false,"given":"Daiana R. F.","family":"Leithardt","sequence":"additional","affiliation":[{"name":"Departamento de Qu\u00edmica, Faculdade de Ci\u00eancias, Universidade da Beira Interior, R. Marqu\u00eas d\u2019\u00c1vila e Bolama, 6201-001 Covilh\u00e3, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0446-9271","authenticated-orcid":false,"given":"Valderi Reis Quietinho","family":"Leithardt","sequence":"additional","affiliation":[{"name":"COPELABS, Universidade Lus\u00f3fona de Humanidades e Tecnologias, 1749-024 Lisboa, Portugal"},{"name":"VALORIZA, Research Center for Endogenous Resources Valorization, Instituto Polit\u00e9cnico de Portalegre, 7300-555 Portalegre, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2021,10,21]]},"reference":[{"key":"ref_1","unstructured":"Allen, I.E., and Seaman, J. (2021, May 27). 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