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The proposed approach takes advantage of large volumes of unlabeled data to select valuable cases to add to the case base while monitoring retention to avoid performance degradation and to build a compact quality case base. We use machine learning techniques to cope with this challenge: an Active Semi-Supervised Learning approach is proposed to overcome the bottleneck of scarcity of labeled data. In order to acquire a quality case base, we target its performance criterion. Case selection and retention are assessed according to three combined sampling criteria: informativeness, representativeness, and diversity. We support our approach with empirical evaluations using different benchmark data sets. Based on experimentation, the proposed approach achieves good classification accuracy with a small number of retained cases, using a small training set as a case base.<\/jats:p>","DOI":"10.1142\/s0218001421510113","type":"journal-article","created":{"date-parts":[[2021,5,31]],"date-time":"2021-05-31T14:17:41Z","timestamp":1622470661000},"page":"2151011","source":"Crossref","is-referenced-by-count":7,"title":["Case-Base Maintenance: An Approach Based on Active Semi-Supervised Learning"],"prefix":"10.1142","volume":"35","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8836-4201","authenticated-orcid":false,"given":"Asma","family":"Chebli","sequence":"first","affiliation":[{"name":"LRI Laboratory, Department of Computer Science, University of Badji Mokhtar, Annaba, Algeria"}]},{"given":"Akila","family":"Djebbar","sequence":"additional","affiliation":[{"name":"LRI Laboratory, Department of Computer Science, University of Badji Mokhtar, Annaba, Algeria"}]},{"given":"Hayet Farida","family":"Merouani","sequence":"additional","affiliation":[{"name":"LRI Laboratory, Department of Computer Science, University of Badji Mokhtar, Annaba, Algeria"}]},{"given":"Hakim","family":"Lounis","sequence":"additional","affiliation":[{"name":"Department of Computer Science, GEDAC-LIA, University of Qu\u00e9bec in Montreal UQ\u00c0M, Montreal, Canada"}]}],"member":"219","published-online":{"date-parts":[[2021,8,14]]},"reference":[{"key":"S0218001421510113BIB001","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-540-28631-8_1"},{"key":"S0218001421510113BIB002","doi-asserted-by":"publisher","DOI":"10.3233\/AIC-1994-7104"},{"key":"S0218001421510113BIB003","doi-asserted-by":"publisher","DOI":"10.1109\/TIT.1970.1054472"},{"key":"S0218001421510113BIB004","doi-asserted-by":"publisher","DOI":"10.1109\/ICIEA.2013.6566435"},{"key":"S0218001421510113BIB005","doi-asserted-by":"publisher","DOI":"10.1142\/9789814675017_0002"},{"key":"S0218001421510113BIB007","doi-asserted-by":"publisher","DOI":"10.1016\/0098-3004(84)90020-7"},{"key":"S0218001421510113BIB008","doi-asserted-by":"publisher","DOI":"10.1007\/BF00058655"},{"key":"S0218001421510113BIB009","doi-asserted-by":"publisher","DOI":"10.1109\/SITIS.2014.118"},{"key":"S0218001421510113BIB010","doi-asserted-by":"publisher","DOI":"10.1109\/TNN.2009.2015974"},{"key":"S0218001421510113BIB011","doi-asserted-by":"publisher","DOI":"10.1016\/j.knosys.2015.07.034"},{"issue":"2","key":"S0218001421510113BIB012","first-page":"454","volume":"13","author":"Chebli A.","year":"2020","journal-title":"Int. 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