In this work we compare two soft-computing methods for producing models that are able to predict whether a company is going to have book losses: artificial neural networks (ANNs) and genetic programming (GP). In order to build prediction models that can be applied to an extensive number of practical cases, we need simple models which require a small amount of data. Kohonen's self-organizing map (SOM) is a non-supervised neural network that is usually used as a clustering tool. In our case a SOM has been used to reduce the dimensions of the prediction problem. Traditionally, ANNs have been considered able to produce better classifier structures than GP. In this work we merge the capability of GP for generating classification trees and the feature extraction abilities of SOM, obtaining a classification tool that beats the results yielded using an evolutionary ANN method.
ResumenEn este trabajo comentamos el desarrollo de una experiencia piloto para presentar un proceso de estudio en el marco de la formación didáctica inicial de los futuros profesores de Educación Secundaria. Se pretende contribuir con ello a la difusión de dicha metodología en las instituciones educativas. El dispositivo didáctico utilizado es el de un recorrido de estudio e investigación para la formación del profesorado (REI-FP), basado en un recorrido de estudio e investigación (REI) para la introducción escolar de los números negativos en un entorno algebraico, previamente diseñado y experimentado en la Educación Secundaria Obligatoria.Palabras-clave: Teoría Antropológica de lo Didáctico, Formación de profesores, Números enteros.AbstractIn this paper, we propose a pilot experience to introduce a study process in the frame of the initial didactic training of the future teachers of Secondary Education. With that we want to contribute to the diffusion of this methodology in the educational institutions. The didactic device used is that of a study and research path for teacher training (SRP-TT), based on a study and research path (SRP) for the school introduction of negative numbers in an algebraic environment, previously designed and experienced in Lower Secondary Education.Keywords: Anthropological Theory of Didactics, Teacher training, Whole numbers.
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