Bases canónicas de homología

Bases de Documentos

Document Bases are large repositories of unstructured data in form of individual documents. Along current Document Bases proposals a general purpose system can not be found. These systems have been built for specific applications and, therefore their architecture is not flexible to be used for alternative applications. In the state of art for Document Bases, it has become of prime importance th...

Personnalisation de bases de données multidimensionnelles

This paper deals with decision support systems resting on multidimensional modelling of data. Moreover, we intend to offer a set of concepts and mechanisms for personalized multidimensional database specifications. This personalization consists in associating weights to different components of a multidimensional schema. Personalization specifications are specified through the use of a language ...

Distribuição de Bases de Dados de Proveniência na Nuvem

Resumo. Dados de proveniência no contexto de workflows científicos são peças fundamentais, pois, por meio deles, os experimentos são passíveis de reprodução e validação. O histórico da execução dos workflows é fundamental também para a gerência da execução de novos workflows uma vez que possibilitam às máquinas de workflow realizar predições sobre desempenho ou custo financeiro de nuvens de com...

Ingénierie des systèmes d'information : bases de données, bases de connaissances et méthodes de conception. (Design Information Systems : Data Bases, Knowledge Bases and Design Methods)

Interactive rule mining in knowledge bases Fouille de règles interactives dans les bases de connaissance

L’extraction de règles d’association dans une base de connaissance consiste en la découverte de façon automatique de règles logiques à partir de faits connus. Cette tâche reste cependant un défi pour plusieurs raisons. D’abord, les bases de connaissances ne contiennent pas d’informations négatives, c’est-à-dire, les méthodes d’extraction de règles ne disposent pas de contre-exemples. En outre, ...