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- item-2 hasContent grazyna-paliwoda-pekosz.
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- 69 creator jan-zemanek.
- 69 creator simon-schenk.
- 69 creator vojtech-svatek.
- 69 type InProceedings.
- 69 label "Optimizing SPARQL Queries over Disparate RDF Data Sources through Distributed Semi-Joins".
- 69 sameAs 69.
- 69 abstract "With the ever-increasing amount of data on the Web available at SPARQL endpoints the need for an integrated and transparent way of accessing the data has arisen. It is highly desirable to have a way of asking SPARQL queries that make use of data residing in disparate data sources served by multiple SPARQL endpoints. We aim at providing such a capability and thus enabling an integrated way of querying the whole Semantic Web at a time.".
- 69 hasAuthorList authorList.
- 69 isPartOf poster_demo_proceedings.
- 69 keyword "Distributed Querying".
- 69 keyword "RDF".
- 69 keyword "SPARQL".
- 69 title "Optimizing SPARQL Queries over Disparate RDF Data Sources through Distributed Semi-Joins".
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- item-1 hasContent jan-zemanek.
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- 7 creator david-norheim.
- 7 creator robert-engels.
- 7 type InProceedings.
- 7 label "SUBLIMA: a software stack for Inter-operable Topic-Centred Information Portals".
- 7 sameAs 7.
- 7 abstract "In order to be more flexible in publishing information and improve accessibility of information for end-users, Oslo Municipality has funded the SUBLIMA project [25]. Within this project a stack of open source Semantic Web and Content Management System (CMS) compo- nents is used in order to deliver a flexible solution for publication of meta-data from libraries. Queries from a specific front-end are automat- ically dispatched to the available SPARQL end-points [23] in a pool of library and archive based installations. Returning results are presented to the user in an integral manner. The final delivery consists of an open source software stack based on Semantic Web Technology and W3C stan- dards. Finally resulting in a well-defined and approved stack of software, major efforts has been spent on licensing issues, immaturity of compo- nent parts, ill-defined documentation of software and conversion of older bases into OWL [5]. Experiences and problems have been discussed with and reported into the respective communities.".
- 7 hasAuthorList authorList.
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- 7 keyword "data conversion".
- 7 keyword "library and archive".
- 7 keyword "ontology centered user interfaces".
- 7 keyword "semantic interoperability".
- 7 keyword "sparql dispatcher".
- 7 title "SUBLIMA: a software stack for Inter-operable Topic-Centred Information Portals".
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- item-1 hasContent robert-engels.
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- item-2 hasContent david-norheim.
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- 70 creator deborah-mcguinness.
- 70 creator paulo-pinheiro-da-silva.
- 70 creator peter-fox.
- 70 type InProceedings.
- 70 label "Knowledge Provenance in Virtual Observatories: Application to Image Data Pipelines".
- 70 sameAs 70.
- 70 abstract "Scientific data services are increasing in usage and scope, and with these increases comes growing need for access to provenance information. Our goal is to design and implement an extensible provenance solution that is deployed at the science data ingest time. In this paper, we describe our work in the setting of a particular set of data services in the area of solar coronal physics. The paper focuses on one existing federated data service and one proposed observatory. Our claim is both that the design and implementation are useful for the particular scientific image data services we designed for, but further that the design provides an operational specification for other scientific data applications. We highlight the need for and usage of semantic technologies and tools in our design and implemented service.".
- 70 hasAuthorList authorList.
- 70 isPartOf poster_demo_proceedings.
- 70 keyword "Image Processing".
- 70 keyword "Provenance".
- 70 keyword "Semantics; explanation".
- 70 keyword "Semantics; justification".
- 70 keyword "Semantics; markup".
- 70 title "Knowledge Provenance in Virtual Observatories: Application to Image Data Pipelines".
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- item-1 hasContent peter-fox.
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- item-2 hasContent deborah-mcguinness.
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- item-3 hasContent paulo-pinheiro-da-silva.
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- 71 creator abdelmounaam-rezgui.
- 71 creator ak-sinha.
- 71 creator deborah-mcguinness.
- 71 creator patrick-west.
- 71 creator peter-fox.
- 71 creator robert-raskin.
- 71 type InProceedings.
- 71 label "Semantic Data Integration and Registration: Application to heterogeneous atmosphere and volcanic data sources".
- 71 sameAs 71.
- 71 abstract "We present our work on semantically-enabled data and schema registration in the setting of a scientific data integration project: SESDI (Semantically-Enabled Scientific Data Integration), which aims initially to integrate heterogeneous volcanic and atmospheric chemical compound data in support of assessing the atmospheric effects of a volcanic eruption. We use semantic methods through out the project, however in this paper and demonstration, we will highlight issues related to our work on data and schema registration and integration. In this process, we will demonstrate how we are re-using previously developed ontologies and how those ontologies are being used to provide a “smart: data integration capability aimed at interdisciplinary scientific research.".
- 71 hasAuthorList authorList.
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