GIRÁLDEZ ROJO , Raúl

Los algoritmos evolutivos conforman una de las más importantes familias de modelos computacionales con aplicación en el campo del aprendizaje automático, cuya validez y efectividad han sido ampliamente estudiada en la bibliografía. Enmarcada dentro del área del aprendizaje supervisado, esta tesis doctoral tiene como objetivo fundamental el...

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En este capítulo se describen diversas técnicas de Minería de Datos que muestran la utilidad de las mismas para la extracción de conocimiento en proyectos de desarrollo del Software. En concreto, se describen las tres fases centrales del proceso: el preprocesado de los datos, mediante la selección de los atributos más relevantes; la Minería de...

The increasing amount of information available is encouraging the search for efficient techniques to improve the data mining methods, especially those which consume great computational resources. We present a novel structure, called EES, which helps the data mining algorithms which generate decision rules to reduce the aforementioned cost....

Some of the most influential factors in the quality of the solutions found by an evolutionary algorithm (EA) are a correct coding of the search space and an appropriate evaluation function of the potential solutions. EAs are often used to learn decision rules from datasets, which are encoded as individuals in the genetic population. In this...

The increasing amount of information available is encouraging the search for efficient techniques to improve the data mining methods, especially those which consume great computational resources, such as evolutionary computation.Efficacy and efficiency are two critical aspects for knowledge-based techniques.The incorporation of knowledge into...

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To select an adequate coding is one of the main problems in applications based on Evolutionary Algorithms. Many codings have been proposed to represent the search space for obtaining decision rules. A suitable representation of the individuals of the genetic population can reduce the search space, so that the learning process is accelerated by...

Hoy en día, el Espacio Europeo de Educación Superior ha propiciado la modificación de las estructuras rígidas, que estaban establecidas en todas las universidades españolas, para convertir a los estudiantes en el centro del proceso de enseñanza-aprendizaje que en las mismas se lleva a cabo. En particular, en las ingenierías siempre ha...

Segmentation algorithms emerge observing fluctuations of DNA sequences in alternative homogeneous domains, which are named segments [1]. The key idea is that two genes that are controlled by a single regulatory system should have similar expression patterns in any data set. In this work, we present a new approach based on Evolutionary...

Background: Triclustering has shown to be a valuable tool for the analysis of microarray data since its appearance as an improvement of classical clustering and biclustering techniques. The standard for validation of triclustering is based on three different measures: correlation, graphic similarity of the patterns and functional annotations...

The aim of this paper is to describe a study for the obtaining, symbolically, of the separation surfaces between clusters of a labelled database. A separation surface is an equation with the form ø; (x)=0, where ø is a function of R n → R. The calculation of function ø is begun by the development of the parametric regression by means of the...