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oai:riubu.ubu.es:10259/51142021-11-10T09:38:17Zcom_10259_4219com_10259_5086com_10259_2604col_10259_4220

Kordos, Mirosław Arnaiz González, Álvar García Osorio, César 2019-06-07T11:14:53Z 2019-06-07T11:14:53Z 2019 0925-2312 http://hdl.handle.net/10259/5114 10.1016/j.neucom.2019.05.055 A novel approach to prototype selection for multi-output regression data sets is presented. A multi-objective evolutionary algorithm is used to evaluate the selections using two criteria: training data set compression and prediction quality expressed in terms of root mean squared error. A multi-target regressor based on k-NN was used for that purpose during the training to evaluate the error, while the tests were performed using four different multi-target predictive models. The distance matrices used by the multi-target regressor were cached to accelerate operational performance. Multiple Pareto fronts were also used to prevent overfitting and to obtain a broader range of solutions, by using different probabilities in the initialization of populations and different evolutionary parameters in each one. The results obtained with the benchmark data sets showed that the proposed method greatly reduced data set size and, at the same time, improved the predictive capabilities of the multi-output regressors trained on the reduced data set. NCN (Polish National Science Center) grant “Evolutionary Methods in Data Selection” No. 2017/01/X/ST6/00202, project TIN2015-67534-P (MINECO/FEDER, UE) of the Ministerio de Economía y Competitividad of the Spanish Government, and project BU085P17 (JCyL/FEDER, UE) of the Junta de Castilla y León cofinanced with European Union FEDER funds. application/pdf eng Elsevier Neurocomputing. 2019, V. 358, p. 309-320 https://doi.org/10.1016/j.neucom.2019.05.055 info:eu-repo/grantAgreement/MINECO/TIN2015-67534-P info:eu-repo/grantAgreement/JCyL/BU085P17 Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Prototype selection Multi-output Multi-target Regression Informática Computer science Evolutionary prototype selection for multi-output regression info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion