Dionisis MargarisCostas VassilakisDimitris SpiliotopoulosStefanos Ougiaroglou2024-06-172024-06-172023https://dspace.iee.ihu.gr/handle/123456789/9827http://orcid.org/0000-0003-1094-2520Rating Prediction Quality Enhancement in Low-Density Collaborative Filtering DatasetsBig Data and Cognitive Computingjournal-article