When training hidden-Markov-model-based part-of-speech (PoS) taggers involved in machine translation systems in an unsupervised manner the use of target-language information has proven to give better results than the standard Baum-Welch algorithm. The target-language-driven training algorithm proceeds by translating every possible…

Los cambios registrados en el clima durante las últimas décadas están afectando a la distribución y dinámica poblacional de las especies a una escala global, induciendo cambios en la fenología, en el crecimiento o en las interacciones bióticas. Estas alteraciones…

Actualmente existe una cierta tendencia investigadora hacia el área de
la búsqueda de respuestas en dominios restringidos. En este papel se detalla la parte
de nuestro sistema de búsqueda de respuestas en el dominio médico que se encarga
del análisis…

When building Hypermedia/Web Applications, (different) designers are often faced with the same problems over and over again. Those recurring problems soon yield elegant solutions, which can be conveniently described as design patterns. In this paper we present two patterns for…

An audience driven philosophy for web site design takes the different target audiences as an explicit starting point, and organizes the basic navigation structure accordingly. However, for the designer it is not always easy, or sometimes even impossible, to assess…

La construcción del propio aprendizaje es una tarea que debemos fomentar desde los Centros Docentes Universitarios y no Universitarios, con el fin de poder llevar a cabo un proceso de enseñanza lo más significativo posible. En este caso, se aborda…

This work presents the main theories and models formulated with the purpose of offering a global overview on the acquisition of knowledge and skills involved in the initial development of expert competence. Setting from this background, we developed an empirical…

We develop a theory to explain the transition from stagnation to modern growth. We focus on the forces that shaped the evolution of total factor productivity in agriculture and manufacturing across history. More specifically, we build a multisector model of…

The extension to new languages is a well known bottleneck for rule-based systems. Considerable human effort, which typically consists in re-writing from scratch huge amounts of rules, is in fact required to transfer the knowledge available to the system from…

This paper presents the automatic extension to other languages of TERSEO, a knowledge-based system for the recognition and normalization of temporal expressions originally developed for Spanish. TERSEO was first extended to English through the automatic translation of the temporal expressions.…