17 research outputs found

    Semantic Web Service Engineering: Annotation Based Approach

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    Web services are an emerging paradigm which aims at implementing software components in the Web. They are based on syntactic standards, notably WSDL. Semantic annotation of Web services provides better qualitative and scalable solutions to the areas of service interoperation, service discovery, service composition and process orchestration. Manual annotation is a time-consuming process which requires deep domain knowledge and consistency of interpretation within annotation teams. Therefore, we propose an approach for semi-automatically annotating WSDL Web services descriptions. This is allowed by Semantic Web Service Engineering. The annotation approach consists of two main processes: categorization and matching. Categorization process consists in classifying WSDL service description to its corresponding domain. Matching process consists in mapping WSDL entities to pre-existing domain ontology. Both categorization and matching rely on ontology matching techniques. A tool has been developed and some experiments have been carried out to evaluate the proposed approach

    Htab2RDF: Mapping HTML Tables to RDF Triples

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    The Web has become a tremendously huge data source hidden under linked documents. A significant number of Web documents include HTML tables generated dynamically from relational databases. Often, there is no direct public access to the databases themselves. On the other hand, RDF (Resource Description Framework) gives an efficient mechanism to represent directly data on the Web based on a Web-scalable architecture for identification and interpretation of terms. This leads to the concept of Linked Data on the Web. To allow direct access to data on the Web as Linked Data, we propose in this paper an approach to transform HTML tables into RDF triples. It consists of three main phases: refining, pre-treatment and mapping. The whole process is assisted by a domain ontology and the WordNet lexical database. A tool called Htab2RDF has been implemented. Experiments have been carried out to evaluate and show efficiency of the proposed approach

    La ré-ingénierie des ontologies: Etat de l'art

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    National audience: Les ontologies visent Ă  capturer la connaissance du domaine et fournissent un consensus sur la comprĂ©hension commune du domaine qui peut ĂȘtre rĂ©utilisĂ©e et partagĂ©e Ă  travers des applications ou des groupes. AprĂšs une certaine pĂ©riode ou selon des besoins applicatifs, l'ontologie doit ĂȘtre modifiĂ©e pour reflĂ©ter au mieux le monde rĂ©el. En se sens, le besoins de mĂ©thodes de rĂ©-ingĂ©nierie et de rĂ©tro-ingĂ©nierie d'ontologies se fait sentir. Cet article prĂ©sente un Ă©tat de l'art sur la rĂ©-ingĂ©nierie des ontologies, en passant par des dĂ©finitions sur le terme 'ontologie', des mĂ©thodes d'ingĂ©nierie ontologique, de rĂ©tro-ingĂ©nierie des bases de donnĂ©es et de rĂ©tro-ingĂ©nierie des ontologies

    La ré-ingénierie des ontologies: Etat de l'art

    No full text
    National audience: Les ontologies visent Ă  capturer la connaissance du domaine et fournissent un consensus sur la comprĂ©hension commune du domaine qui peut ĂȘtre rĂ©utilisĂ©e et partagĂ©e Ă  travers des applications ou des groupes. AprĂšs une certaine pĂ©riode ou selon des besoins applicatifs, l'ontologie doit ĂȘtre modifiĂ©e pour reflĂ©ter au mieux le monde rĂ©el. En se sens, le besoins de mĂ©thodes de rĂ©-ingĂ©nierie et de rĂ©tro-ingĂ©nierie d'ontologies se fait sentir. Cet article prĂ©sente un Ă©tat de l'art sur la rĂ©-ingĂ©nierie des ontologies, en passant par des dĂ©finitions sur le terme 'ontologie', des mĂ©thodes d'ingĂ©nierie ontologique, de rĂ©tro-ingĂ©nierie des bases de donnĂ©es et de rĂ©tro-ingĂ©nierie des ontologies
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