rgfprg swamm06

Information about rgfprg swamm06

Published on January 21, 2008

Author: Matild

Source: authorstream.com

Content

Ontological Infrastructure for a Semantic Newspaper:  Ontological Infrastructure for a Semantic Newspaper Roberto García1, Ferran Perdrix1,2, Rosa Gil1 1GRIHO – Human Computer Interaction Research Group Universitat de Lleida, Spain 2SEGRE Media Group, Spain Contents:  Contents Introduction Proposal Ontological framework Integration framework Conclusions Future Work Contents:  Contents Introduction Proposal Ontological framework Integration framework Conclusions Future Work Introduction:  Introduction Press and Media companies getting digital and Web Segre: newspaper, radio, television and web portal. Multiple kinds of media text, photo, video,… Heterogeneous sources agencies, journalists, partners, institutions,… Heterogeneity: difficult to integrate and manage. Introduction:  Introduction Related standards: International Press NewsCodes, subjects reference system, taxonomy NITF, news documents structure NewsML, model news as multimedia packages Multimedia MPEG-7, descriptive multimedia metadata TV-Anytime, multimedia taxonomies Common aspect: non formal semantics, XML-based Introduction:  Introduction Journalists News Agencies Legacy News+Media Receiver News+Photos Custom XML NITF, NewsCodes, NewsML,… Archivist User Contents:  Contents Introduction Proposal Ontological framework Integration framework Conclusions Future Work Proposal:  Proposal Semantic Metadata and Ontology facilitate management and integration. Related previous work: ELIN (Electronic Newspaper Initiative) NEPTUNO (Semantic Web Technologies for Digital Newspaper) NewMARS (Multimedia Advanced Redistribution Surveillance) Proposal:  Proposal Journalists News Agencies Legacy Receiver Semantic Repository User Contents:  Contents Introduction Proposal Ontological framework Integration framework Conclusions Future Work Ontological Framework:  Ontological Framework NewsML, NITF, NewsCodes, MPEG-7, TVAnytime XML  Semantic Web “XML Semantics Reuse Methodology”. ReDeFer implementation XSD2OWL: schema to ontology. XML2RDF: XML instance data to RDF instances. CS2OWL: classification scheme to ontology Ontological Framework:  Ontological Framework ReDeFer XSD2OWL Mappings: Ontological Framework:  Ontological Framework NewsCodes Subjects Ontology Subjects taxonomy NITF 3.3 Ontology Structure concepts (paragraph, subheadline,…) Metadata properties (copyright, authorship, issue date,…) NewsML 1.2 Ontology News multimedia structure (envelope, component, item,…) MPEG-7 Ontology Complete ontology (2372 classes and 975 properties) TVAnytime Ontologies Content and Format CSs Ontological Framework: MPEG-7:  Ontological Framework: MPEG-7 Validation, compare to other MPEG-7 Ontologies: Hunter02: not complete, RDF+DAML. Tsinaraki04: not complete, semantic part of MDS. Troncy03: not complete, from an ontology to MPEG-7. Ontological Framework: MPEG-7:  Ontological Framework: MPEG-7 Hunter02 MPEG-7 Ontology Ontological Framework: MPEG-7:  Ontological Framework: MPEG-7 MPEG-7 Ontology Ontological Framework: MPEG-7:  Ontological Framework: MPEG-7 Tsinaraki04 MPEG-7 Ontology <complexType name="AudioType"> <complexContent> <extension base= "mpeg7:MultimediaContentType"> <sequence> <element name="Audio" type="mpeg7:AudioSegmentType"/> </sequence> </extension> </complexContent> </complexType> Class (AudioType partial restriction(Audio cardinality(1)) MultimediaContentType) Class (AudioType partial restriction(Audio cardinality(1)) restriction(Audio allValuesFrom(AudioSegmentType))) MultimediaContentType) Ontological Framework: Instances:  Ontological Framework: Instances ReDeFer XML2RDF: XML tree  RDF graph. Deduce blank node types from XSD2OWL ontologies restrictions. Ontological Framework: Instances:  Ontological Framework: Instances XML2RDF example Contents:  Contents Introduction Proposal Ontological framework Integration framework Conclusions Future Work Integration Framework:  Integration Framework Load Ontological Framework Integration Framework:  Integration Framework NITF packaged in NewsML container IPTC’s NITF-to-NewsML Metadata Mapping Stylesheet <NewsML> <NewsItem> <NewsComponent> <DescriptiveMetadata> <SubjectCode> <Subject FormalName="04000000"/> </SubjectCode> </DescriptiveMetadata> <ContentItem> <DataContent> <nitf><body>…</body></nitf> </DataContent> </ContentItem> </NewsComponent> </NewsItem> </NewsML> Integration Framework:  Integration Framework NewsML multimedia items context and content-based MPEG-7 metadata XML2RDF: RDF for NewsML-NITF instances Bridge subjects to NewsCodes ontology RDF for MPEG-7 metadata Integration Framework:  Integration Framework Integration Framework:  Integration Framework Contents:  Contents Introduction Proposal Ontological framework Integration framework Conclusions Future Work Conclusions:  Conclusions Conclusions:  Conclusions Press and Media domain: heterogeneous and metadata intensive Semantic Web and Ontology facilitate management and integration Existing work NewsML, NITF, NewsCodes, MPEG-7, TVAnytime,… Conclusions:  Conclusions XSD2OWL: take profit from XML Schema hidden semantics We formalise them when building ontologies, but also implicitly when we make XML Schemas. XML2RDF: reuse existing XML metadata to add momentum to the Semantic Web Contents:  Contents Introduction Proposal Ontological framework Integration framework Conclusions Future Work Future Work:  Future Work Generate ontology for legacy system XML Map legacy ontology to NewsML-NITF ontologies Integrate automatic and assisted MPEG-7 metadata multimedia annotation Complete the integration framework Future Work:  Future Work User Interface: Rhizomik Media MPEG-7, TVAnytime, DC, Copyright Ontology… Rhizomer-based semantic portal Rhizomer Thank you for your attention:  Thank you for your attention More at: http://rhizomik.net …/redefer …/semanticnewspaper …/ontologies/mpeg7ontos Contact: [email protected] {fperdrix,rgil}@diei.udl.es

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