The structured techniques for systems analysis and design are still the most widely known. One of the alternatives of this technique is the JAD methodology (Joint Application Design). This methodology is an improvement with respect to the existing ones -…

Data base management evolved during the sixties and seventies. The evolution period was protracted. Many driving forces impacted the evolution and it is the aim of this paper to analyze these driving forces (some technical and some political) and to…

This paper shows models of data description that incorporate uncertainty like models of data extension EER, IFO among others. These database modeling tools are compared with the pattern FuzzyEER proposed by us, which is an extension of the EER model…

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In cases of extremely imbalanced dataset with high dimensions, standard machine learning techniques tend to be overwhelmed by the large classes. This paper rebalances skewed datasets by compressing the majority class. This approach combines Vector Quantization and Support Vector Machine…

Uno de los desafíos de la Generación de Lenguaje Natural es la adaptación de
la estructura y las palabras de la salida lingüística a la habilidad del usuario, el contenido,
el género apropiado, el estilo, etc. Nos centramos en la…

Este trabajo explora la división de atributos en grupos para poder
mejorar la desambiguación de acepciones (WSD) mediante la combinación de sistemas
entrenados en cada uno de estos grupos de atributos. Los resultados conseguidos
demuestran que sólo k-NN es capaz…

El objetivo principal de este trabajo es comprobar si un modelo de
lenguaje basado en categorías puede mejorar el rendimiento de un sistema de diálogo,
de la misma forma que lo hace para aplicaciones que utilizan bases de datos no

This document describes a research and development project - Semantic Web and Cooperative Problem Solving for Online Communities of Practice. The aim of the project is to build a system supporting Cooperative Problem Solving within the framework of online Communities…

This paper describes an approach to On Line Analytical Processing (OLAP), expresed in the declarative programming paradigm.
We define a collection of functions that capture some of the functionality currently provided by multidimensional database product. This is done by defining…