Bernard Vatant - Academia.edu (original) (raw)
Papers by Bernard Vatant
Ontology management tools are now mature as a core technology. They have been proven to be flexib... more Ontology management tools are now mature as a core technology. They have been proven to be flexible, scalable, so we know ontology-driven information systems can fly. But migration of legacy systems needs methodology and guidelines regarding the way legacy concepts will be represented and used in the target system in order. We propose here a functional approach, where the choice of representation framework is driven by the intended usage of concepts, and how focusing on a single representation can be a conceptual brake. We show how the terminological aspects can be integrated with the ontological ones, that different representations of the same concept have generally to coexist in the system for different usages, and how the various Semantic Web languages can be used to glue together those different representations. In particular we focus on the central role of thesaurus-like representations as providing the needed bridge between the various terminological and formal aspects of the ...
Documentaliste Sciences De L Information, Feb 1, 2009
Vocabularies are more and more (re)-used in the Linked Data ecosystem. However, managing the pref... more Vocabularies are more and more (re)-used in the Linked Data ecosystem. However, managing the prefixes associated to their Uniform Resource Identifiers (URIs) is still cumbersome and namespaces are sometimes referring to different pair <prefix, URI>. In this paper, we propose to align two well-known services with the aim of managing and harmonizing vocabularies' namespaces. We use prefix.cc that provides a look up service for namespaces in general and Linked Open Vocabularies (LOV) that extracts vocabularies metadata. Our method enables to identify three different scenarios: (i) conflicts between prefix.cc and LOV; (ii) prefixes in LOV not present in prefix.cc and (iii) URIs in prefix.cc that are actually LOV-able vocabularies. We describe how we solve each of these issues, with actions ranging from updating the different services to contacting the editors of the vocabularies to fix clashes among prefixes. Finally, we present the new LOV API that enables to check whether those namespaces in prefix.cc can actually be vocabularies to be inserted in the LOV ecosystem or not.
Documentaliste-Sciences de l'Information, 2009
Documentaliste-Sciences de l'Information, 2011
Vocabularies are more and more (re)-used in the Linked Data ecosystem. However, managing the pref... more Vocabularies are more and more (re)-used in the Linked Data ecosystem. However, managing the prefixes associated to their Uniform Resource Identifiers (URIs) is still cumbersome and namespaces are sometimes referring to different pair <prefix, URI>. In this paper, we propose to align two well-known services with the aim of managing and harmonizing vocabularies' namespaces. We use prefix.cc that provides a look up service for namespaces in general and Linked Open Vocabularies (LOV) that extracts vocabularies metadata. Our method enables to identify three different scenarios: (i) conflicts between prefix.cc and LOV; (ii) prefixes in LOV not present in prefix.cc and (iii) URIs in prefix.cc that are actually LOV-able vocabularies. We describe how we solve each of these issues, with actions ranging from updating the different services to contacting the editors of the vocabularies to fix clashes among prefixes. Finally, we present the new LOV API that enables to check whether those namespaces in prefix.cc can actually be vocabularies to be inserted in the LOV ecosystem or not.
Documentaliste-Sciences de l'Information, 2011
La reproduction ou représentation de cet article, notamment par photocopie, n'est autorisée que d... more La reproduction ou représentation de cet article, notamment par photocopie, n'est autorisée que dans les limites des conditions générales d'utilisation du site ou, le cas échéant, des conditions générales de la licence souscrite par votre établissement. Toute autre reproduction ou représentation, en tout ou partie, sous quelque forme et de quelque manière que ce soit, est interdite sauf accord préalable et écrit de l'éditeur, en dehors des cas prévus par la législation en vigueur en France. Il est précisé que son stockage dans une base de données est également interdit.
As many cities around the world provide access to raw public data along the Open Data movement, m... more As many cities around the world provide access to raw public data along the Open Data movement, many questions arise concerning the accessibility of these data. Various data formats, duplicate identifiers, heterogeneous metadata schema descriptions, and diverse means to access or query the data exist. These factors make it difficult for consumers to reuse and integrate data sources to develop innovative applications. The Semantic Web provides a global solution to these problems by providing languages and protocols for ...
Topic maps have been developed in order to represent the structures of relationships between subj... more Topic maps have been developed in order to represent the structures of relationships between subjects, independently of resources documenting them, and to allow standard representation and interoperability of such structures. The ISO 13250 XTM specification [2] have provided a robust syntactic XML representation allowing processing and interchange of topic maps. But topic maps have so far suffered from a lack of formal description, or conceptual model. We propose here such a model, based on the mathematical notions of hypergraph and connexity. This model addresses the critical issue of topic map organization in semantic layers, and provides ways to check semantic consistency of topic maps. Moreover, it seems generic enough to be used as a foundation for other semantic standards, like RDF [3].
Ontology management tools are now mature as a core technology. They have been proven to be flexib... more Ontology management tools are now mature as a core technology. They have been proven to be flexible, scalable, so we know ontology-driven information systems can fly. But migration of legacy systems needs methodology and guidelines regarding the way legacy concepts will be represented and used in the target system in order. We propose here a functional approach, where the choice of representation framework is driven by the intended usage of concepts, and how focusing on a single representation can be a conceptual brake. We show how the terminological aspects can be integrated with the ontological ones, that different representations of the same concept have generally to coexist in the system for different usages, and how the various Semantic Web languages can be used to glue together those different representations. In particular we focus on the central role of thesaurus-like representations as providing the needed bridge between the various terminological and formal aspects of the same concept. At last, we show a few examples of ontologydriven systems that have actually take-off in the real life, based on this methodology.
EU-IST Specific targeted research project (STREP) IST-2004-026460 TAO Deliverable D1.2.2 (WP 1)
EU-IST Specific targeted research project (STREP) IST-2004-026460 TAO Deliverable D1.2 Second Dra... more EU-IST Specific targeted research project (STREP) IST-2004-026460 TAO Deliverable D1.2 Second Draft (WP 1)
Ontology management tools are now mature as a core technology. They have been proven to be flexib... more Ontology management tools are now mature as a core technology. They have been proven to be flexible, scalable, so we know ontology-driven information systems can fly. But migration of legacy systems needs methodology and guidelines regarding the way legacy concepts will be represented and used in the target system in order. We propose here a functional approach, where the choice of representation framework is driven by the intended usage of concepts, and how focusing on a single representation can be a conceptual brake. We show how the terminological aspects can be integrated with the ontological ones, that different representations of the same concept have generally to coexist in the system for different usages, and how the various Semantic Web languages can be used to glue together those different representations. In particular we focus on the central role of thesaurus-like representations as providing the needed bridge between the various terminological and formal aspects of the ...
Documentaliste Sciences De L Information, Feb 1, 2009
Vocabularies are more and more (re)-used in the Linked Data ecosystem. However, managing the pref... more Vocabularies are more and more (re)-used in the Linked Data ecosystem. However, managing the prefixes associated to their Uniform Resource Identifiers (URIs) is still cumbersome and namespaces are sometimes referring to different pair <prefix, URI>. In this paper, we propose to align two well-known services with the aim of managing and harmonizing vocabularies' namespaces. We use prefix.cc that provides a look up service for namespaces in general and Linked Open Vocabularies (LOV) that extracts vocabularies metadata. Our method enables to identify three different scenarios: (i) conflicts between prefix.cc and LOV; (ii) prefixes in LOV not present in prefix.cc and (iii) URIs in prefix.cc that are actually LOV-able vocabularies. We describe how we solve each of these issues, with actions ranging from updating the different services to contacting the editors of the vocabularies to fix clashes among prefixes. Finally, we present the new LOV API that enables to check whether those namespaces in prefix.cc can actually be vocabularies to be inserted in the LOV ecosystem or not.
Documentaliste-Sciences de l'Information, 2009
Documentaliste-Sciences de l'Information, 2011
Vocabularies are more and more (re)-used in the Linked Data ecosystem. However, managing the pref... more Vocabularies are more and more (re)-used in the Linked Data ecosystem. However, managing the prefixes associated to their Uniform Resource Identifiers (URIs) is still cumbersome and namespaces are sometimes referring to different pair <prefix, URI>. In this paper, we propose to align two well-known services with the aim of managing and harmonizing vocabularies' namespaces. We use prefix.cc that provides a look up service for namespaces in general and Linked Open Vocabularies (LOV) that extracts vocabularies metadata. Our method enables to identify three different scenarios: (i) conflicts between prefix.cc and LOV; (ii) prefixes in LOV not present in prefix.cc and (iii) URIs in prefix.cc that are actually LOV-able vocabularies. We describe how we solve each of these issues, with actions ranging from updating the different services to contacting the editors of the vocabularies to fix clashes among prefixes. Finally, we present the new LOV API that enables to check whether those namespaces in prefix.cc can actually be vocabularies to be inserted in the LOV ecosystem or not.
Documentaliste-Sciences de l'Information, 2011
La reproduction ou représentation de cet article, notamment par photocopie, n'est autorisée que d... more La reproduction ou représentation de cet article, notamment par photocopie, n'est autorisée que dans les limites des conditions générales d'utilisation du site ou, le cas échéant, des conditions générales de la licence souscrite par votre établissement. Toute autre reproduction ou représentation, en tout ou partie, sous quelque forme et de quelque manière que ce soit, est interdite sauf accord préalable et écrit de l'éditeur, en dehors des cas prévus par la législation en vigueur en France. Il est précisé que son stockage dans une base de données est également interdit.
As many cities around the world provide access to raw public data along the Open Data movement, m... more As many cities around the world provide access to raw public data along the Open Data movement, many questions arise concerning the accessibility of these data. Various data formats, duplicate identifiers, heterogeneous metadata schema descriptions, and diverse means to access or query the data exist. These factors make it difficult for consumers to reuse and integrate data sources to develop innovative applications. The Semantic Web provides a global solution to these problems by providing languages and protocols for ...
Topic maps have been developed in order to represent the structures of relationships between subj... more Topic maps have been developed in order to represent the structures of relationships between subjects, independently of resources documenting them, and to allow standard representation and interoperability of such structures. The ISO 13250 XTM specification [2] have provided a robust syntactic XML representation allowing processing and interchange of topic maps. But topic maps have so far suffered from a lack of formal description, or conceptual model. We propose here such a model, based on the mathematical notions of hypergraph and connexity. This model addresses the critical issue of topic map organization in semantic layers, and provides ways to check semantic consistency of topic maps. Moreover, it seems generic enough to be used as a foundation for other semantic standards, like RDF [3].
Ontology management tools are now mature as a core technology. They have been proven to be flexib... more Ontology management tools are now mature as a core technology. They have been proven to be flexible, scalable, so we know ontology-driven information systems can fly. But migration of legacy systems needs methodology and guidelines regarding the way legacy concepts will be represented and used in the target system in order. We propose here a functional approach, where the choice of representation framework is driven by the intended usage of concepts, and how focusing on a single representation can be a conceptual brake. We show how the terminological aspects can be integrated with the ontological ones, that different representations of the same concept have generally to coexist in the system for different usages, and how the various Semantic Web languages can be used to glue together those different representations. In particular we focus on the central role of thesaurus-like representations as providing the needed bridge between the various terminological and formal aspects of the same concept. At last, we show a few examples of ontologydriven systems that have actually take-off in the real life, based on this methodology.
EU-IST Specific targeted research project (STREP) IST-2004-026460 TAO Deliverable D1.2.2 (WP 1)
EU-IST Specific targeted research project (STREP) IST-2004-026460 TAO Deliverable D1.2 Second Dra... more EU-IST Specific targeted research project (STREP) IST-2004-026460 TAO Deliverable D1.2 Second Draft (WP 1)