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…

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…

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.…

The Answer Validation Exercise (AVE) is a pilot track within the Cross-Language Evaluation Forum (CLEF) 2006. The AVE competition provides an evaluation frame-
work for answer validations in Question Answering (QA). In our participation in AVE, we propose a system…

Los métodos de generación de resúmenes basados en técnicas extractivas han demostrado ser muy útiles por su adaptabilidad y eficiencia en tiempo de respuesta en cualquier tipo de dominios. En el ámbito biomédico son numerosos los estudios que hablan de…

This article reviews existing knowledge concerning the epidemiology, instruments and regulatory criteria currently used to evaluate artificial turf soccer pitches. Recent years have seen tremendous growth in the use of artificial turf as a playing surface for sports (rugby, soccer,…

En este trabajo se pretende comparar dos de los métodos de enseñanza y aprendizaje que en la actualidad están siendo impartidos tanto en las escuelas, como en los institutos y en las universidades. Uno de estos métodos es la clase…

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 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…