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:…

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,…

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.

O Brasil é o maior produtor mundial de café e o segundo maior mercado consumidor, portanto, a cultura do cafeeiro tem grande importância cultural e socioeconômica para o país. Entre os limitantes na produtividade estão, principalmente, as doenças, as pragas,…

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…

La comprensión de la noción de derivada presenta dificultades para los estudiantes de Bachillerato (16-18 años) y primeros años de Cálculo en la Universidad. En este contexto, este trabajo revisa y organiza las aportaciones de las investigaciones realizadas en Educación…

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…

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…

Cuando se analizan los diseños curriculares que desarrollan las instituciones de formación docente se evidencia que en su mayoría están centrados en la asignaturización de contenidos y en enfoques lógico-instrumentales con énfasis en la simplificación y fragmentación del conocimiento. Así,…