RT info:eu-repo/semantics/article T1 Direct quality prediction in resistance spot welding process: Sensitivity, specificity and predictive accuracy comparative analysis A1 Pereda, María A1 Santos Martín, José Ignacio A1 Martín, Óscar A1 Galán Ordax, José Manuel K1 Resistance spot welding K1 Classification K1 Pattern recognition K1 Quality control K1 Support vector machines K1 Random forest K1 Artificial neural networks K1 Gestión de empresas K1 Industrial management AB In this work, several of the most popular and state-of-the-art classification methods are compared as pattern recognition tools for classificationof resistance spot welding joints. Instead of using the result of a non-destructivetesting technique as input variables, classifiers are trained directly with therelevant welding parameters, i.e. welding current, welding time and the type ofelectrode (electrode material and treatment). The algorithms are compared interms of accuracy and area under the receiver operating characteristic (ROC)curve metrics, using nested cross-validation. Results show that although there is not a dominant classifier for every specificity/sensitivity requirement, support vector machines using radial kernel, boosting and random forest techniques obtain the best performance overall PB Maney Publishing SN 1362-1718 YR 2015 FD 2015-11 LK http://hdl.handle.net/10259/3928 UL http://hdl.handle.net/10259/3928 LA eng NO Spanish MICINN Project CSD2010-00034 (SimulPast CONSOLIDER-INGENIO 2010) and by the Junta de Castilla y León GREX251-2009 DS Repositorio Institucional de la Universidad de Burgos RD 22-nov-2024