Ontologias no Suporte a Evolução de Contedos em Portais Semânticos
نویسندگان
چکیده
In a semantic portal, contents are described and organized based on domain ontologies. However, with the increasing amount of information generated each day on the web, dynamic publishing in these portals, whose contents are obtained from a large and diversified number of sites, still represents a major challenge, since this task lacks mechanisms to update and integrate information automatically. This paper presents an architecture that facilitates the population of a domain ontology from web sites that have a certain semantic feature. These instances may be used later in the process of a semantic portal automatic updating. Resumo. Em um portal semântico, conteúdos são descritos e organizados com base em ontologias de domínio. Entretanto, com a quantidade crescente de informações geradas a cada dia na web, a publicação dinâmica nesses portais, cujos conteúdos são oriundos de um grande e diversificado número de sites, ainda representa um grande desafio, uma vez que essa tarefa carece de mecanismos para atualizar e integrar informações automaticamente. Este artigo apresenta uma arquitetura que facilita a população de uma ontologia de domínio a partir de sites que apresentam alguma característica semântica. As instâncias recuperadas destes sites podem ser utilizadas posteriormente no processo de atualização automática de um portal semântico.
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