Matches in ScholarlyData for { ?s ?p ?o. }
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- 165 creator giorgos-flouris.
- 165 creator irini-fundulaki.
- 165 creator panagiotis-pediaditis.
- 165 creator vassilis-christophides.
- 165 creator yannis-theoharis.
- 165 type InProceedings.
- 165 label "Coloring RDF Triples to Capture Provenance".
- 165 sameAs 165.
- 165 abstract "Recently, the W3C Linking Open Data effort has boosted the publication and inter-linkage of large amounts of RDF datasets on the Semantic Web. Various ontologies and knowledge bases with millions of RDF triples from Wikipedia and other sources, mostly in e-science, have been created and are publicly available. Recording provenance information of RDF triples aggregated from different heterogeneous sources is crucial in order to effectively support trust mechanisms, digital rights and privacy policies. Managing provenance becomes even more important when we consider not only explicitly stated but also implicit triples (through RDFS inference rules) in conjunction with declarative languages for querying and updating RDF graphs. In this paper we rely on colored RDF triples represented as quadruples to capture and manipulate explicit provenance information.".
- 165 hasAuthorList authorList.
- 165 hasTopic Semantic_Web.
- 165 isPartOf proceedings.
- 165 title "Coloring RDF Triples to Capture Provenance".
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- item-1 hasContent giorgos-flouris.
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- 174 creator amit-sheth.
- 174 creator christine-robson.
- 174 creator daniel-gruhl.
- 174 creator jan-pieper.
- 174 creator meena-nagarajan.
- 174 type InProceedings.
- 174 label "Context and Domain Knowledge Enhanced Entity Spotting in Informal Text".
- 174 sameAs 174.
- 174 abstract "This paper explores the application of restricted relationship graphs (RDF) and statistical NLP techniques to improve named entity annotation in challenging Informal English domains. We validate our approach using on-line forums discussing popular music. Named entity annotation is particularly difficult in this domain because it is characterized by a large number of ambiguous entities, such as the Madonna album Music or Lilly Allens pop hit Smile. We evaluate improvements in annotation accuracy that can be obtained by restricting the set of possible entities using real-world constraints. We find that constrained domain entity extraction raises the annotation accuracy significantly, making an infeasible task practical. We then show that we can further improve annotation accuracy by over 50% by applying SVM based NLP systems trained on word-usages in this domain.".
- 174 hasAuthorList authorList.
- 174 hasTopic Semantic_Web.
- 174 isPartOf proceedings.
- 174 title "Context and Domain Knowledge Enhanced Entity Spotting in Informal Text".
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- item-1 hasContent daniel-gruhl.
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- 203 creator andreas-langegger.
- 203 creator wolfram-woess.
- 203 type InProceedings.
- 203 label "XLWrap - Querying and Integrating Arbitrary Spreadsheets with SPARQL".
- 203 sameAs 203.
- 203 abstract "In this paper a novel approach is presented for generating RDF graphs of arbitrary complexity from various spreadsheet layouts. Currently, none of the available spreadsheet-to-RDF wrappers supports cross tables and tables where data is not aligned in rows. Similar to RDF123, XLWrap is based on template graphs where fragments of triples can be mapped to specific cells of a spreadsheet. Additionally, it features a full expression algebra based on the syntax of OpenOffice Calc and various shift operations, which can be used to repeat similar mappings in order to wrap cross tables including multiple sheets and spreadsheet files. The set of available expression functions includes most of the native functions of OpenOffice Calc and can be easily extended by users of XLWrap. Additionally, XLWrap is able to execute SPARQL queries, and since it is possible to define multiple virtual class extents in a mapping specification, it can be used to integrate information from multiple spreadsheets. XLWrap supports a special identity concept which allows to link anonymous resources (blank nodes) - which may originate from different spreadsheets - in the target graph.".
- 203 hasAuthorList authorList.
- 203 hasTopic Semantic_Web.
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- 203 title "XLWrap - Querying and Integrating Arbitrary Spreadsheets with SPARQL".
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- item-1 hasContent andreas-langegger.
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