In the last few years, several studies have emphasized the use of ontologies as an alternative to organization of the information.
The notion of ontology has become popular in fields such as intelligent information integration, information retrieval on the Internet,…

Document classification has already been widely studied. In fact, some studies compared feature selection techniques or feature space transformation whereas some others compared the performance of different algorithms. Recently, following the rising interest towards the Support Vector Machine, various studies…

En este trabajo se describe el desarrollo de un corpus de preguntas y
respuestas factuales similares a las utilizadas en las conferencias TREC. Dicho corpus
consta de más de 70.000 muestras, cada una de ellas con la siguiente información:
una…

This paper describes the development of an image retrieval
system that combines probabilistic and ontological information1. The
process is divided in two different stages: indexing and retrieval. Three
information flows have been created with different kind of information
each one:…

El presente trabajo es una investigación documental, por su temática es de desarrollo teórico, persigue presentar el enfoque de Ramón A Tovar, sus imágenes de ruptura y continuidad para darle corpus a una ciencia considerada desde el criterio de lo…

En este artículo intentamos justificar la relación intrínseca entre texto/imagen en libros escolares que abordan la enseñanzaaprendizaje de la ciudad. Partimos de ciertas premisas teóricas para luego, indagar a través de principios de la metodología cualitativa, el valor del contenido…

Presented at: Conference on Structural Reform and the Transformation of Organizations and Businesses, sponsored by the Ashcroft International Business School and the Athenian Policy Forum. Homerton College, Cambridge, 3-6 September 2003.

This paper provides new versions of Harsanyi’s social aggregation theorem that are formulated in terms of prospects rather than lotteries. Strengthening an earlier result, fixed-population ex-ante utilitarianism is characterized in a multi-profile setting with fixed probabilities. In addition, we extend…

This paper proposes a definition of relative uncertainty aversion for decision models under complete uncertainty. It is shown that, for a large class of decision rules characterized by a set of plausible axioms, the new criterion yields a complete ranking…

Algunas aplicaciones del procesamiento del lenguaje natural, p.ej. la traducción
automática, requieren una base de conocimiento provista de representaciones conceptuales que
puedan reflejar la estructura del sistema cognitivo del ser humano. En cambio, tareas como la
indización automática o la…