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- 327 creator martin-hepp.
- 327 creator michael-stollberg.
- 327 creator mick-kerrigan.
- 327 type InProceedings.
- 327 label "A Goal-Based Semantic Web Service Browser".
- 327 sameAs 327.
- 327 abstract "We present a novel approach for the visualization and browsing of Web services. In contrast to most existing tools that categorize Web service with respect to specific description elements, our tool is based on goals that describe the objective that a client wants to solve by using Web services while abstracting from the technical details. The data structure for our search space visualization is a graph that organizes goal templates - i.e. generic and reusable objective descriptions - with respect to their semantic similarity, and keeps the relevant knowledge on the available Web services for solving them; the graph is generated automatically by semantic matchmaking. The browsing tool is implemented as a new plug-in of the Web Service Modeling Toolkit WSMT, an integrated development environment for Semantic Web services.".
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- 327 title "A Goal-Based Semantic Web Service Browser".
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- item-1 hasContent michael-stollberg.
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- 338 creator abraham-bernstein.
- 338 creator christoph-kiefer.
- 338 creator markus-stocker.
- 338 type InProceedings.
- 338 label "SPARQL Query Optimization Using Selectivity Estimation".
- 338 sameAs 338.
- 338 abstract "This poster describes three static SPARQL optimization approaches for in-memory RDF graphs: (1) a selectivity estimation index (SEI) for single query triple patterns; (2) a query pattern index (QPI) for joined triple patterns; and (3) a hybrid optimization approach that combines both indexes. Using the Lehigh University Benchmark (LUBM), we show that the hybrid approach outperforms other SPARQL query engines such as ARQ and Sesame for in-memory graphs.".
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- 338 title "SPARQL Query Optimization Using Selectivity Estimation".
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- item-1 hasContent abraham-bernstein.
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- 339 creator dieter-fensel.
- 339 creator francois-scharffe.
- 339 creator jerome-euzenat.
- 339 creator ying-ding.
- 339 type InProceedings.
- 339 label "Correspondence Patterns for Ontology Mediation".
- 339 sameAs 339.
- 339 abstract "Ontology mediation is one of the key research topics for the acomplishment of the semantic web. Different tasks can be distinguished under this generic term: instance transformation, query rewriting, instance unification, ontology merging or alignment creation. All first four tasks require the specification of an alignment between the ontologies to be mediated. Graphical tools and matching algorithms are developed to help specialists creating such specifications. In order to improve both user tools and matching algorithms we developped a library of correspondence patterns to represent complex correspondences between ontologies. We express these patterns as an extension of the Ontology Alignment ontology, meant to serve as an exchange format to represent ontology alignments on the semantic web.".
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- 339 title "Correspondence Patterns for Ontology Mediation".
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