Matches in ScholarlyData for { ?s ?p ?o. }
- 347 label "ELP: Tractable Rules for OWL 2".
- 347 sameAs 347.
- 347 abstract "We introduce ELP as a decidable fragment of the Semantic Web Rule Language (SWRL) that admits reasoning in polynomial time. ELP is based on the tractable description logic EL++, and encompasses an extended notion of the recently proposed DL rules for that logic. Thus ELP extends EL++ with a number of features introduced by the forthcoming OWL 2, such as disjoint roles, local reflexivity, certain range restrictions, and the universal role. We present a reasoning algorithm based on a translation of ELP to Datalog, and this translation also enables the seamless integration of DL-safe rules into ELP. While reasoning with DL-safe rules as such is already highly intractable, we show that DL-safe rules based on the Description Logic Programming (DLP) fragment of OWL 2 can be admitted in ELP without losing tractability.".
- 347 hasAuthorList authorList.
- 347 hasTopic Semantic_Web.
- 347 isPartOf proceedings.
- 347 keyword "Datalog".
- 347 keyword "Description logics".
- 347 keyword "OWL 2".
- 347 keyword "SWRL".
- 347 title "ELP: Tractable Rules for OWL 2".
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- item-1 hasContent markus-kroetzsch.
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- item-2 hasContent sebastian-rudolph.
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- item-3 hasContent pascal-hitzler.
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- 360 creator david-j-zielinski.
- 360 creator glenda-kelly.
- 360 creator harry-halpin.
- 360 creator rachael-brady.
- 360 type InProceedings.
- 360 label "Exploring Semantic Social Networks Using Virtual Reality".
- 360 sameAs 360.
- 360 abstract "We present Redgraph, a generic virtual reality visualization program for Semantic Web data capable of handling large data-sets, which we demonstrate on social network data from the U.S. Patent Trade Office. We develop a Semantic Web vocabulary of virtual reality terms compatible with GraphXML to map graph visualization into the Semantic Web itself. Our approach in visualizing Semantic Web data takes advantage of user-interaction in an immersive environment to bypass a number of difficult issues in the 3-dimensional graph visualization layout problem by relying on the user themselves to interactively extrude the nodes and links of a 2-dimensional network into the third dimension. When users touch nodes in the virtual reality environment, they retrieve data formatted according to the data's schema or ontology. We applied Redgraph to social network data constructed from patents, inventors, and institutions from the United States Patent and Trademark Office in order to explore networks of innovation in computing. Using this data-set, we present the results of a user study comparing extrusion (3-D) vs. no-extrusion (2-D). The use of a 3-D interface showed that subjects led to significant improvement on answering of fine-grained questions about the data-set, but no significant difference was found broad questions about the overall structure of the data were asked. Furthermore, inference can be used to improve the visualization, as demonstrated with a data-set of biotechnology patents and researchers.".
- 360 hasAuthorList authorList.
- 360 hasTopic Semantic_Web.
- 360 isPartOf proceedings.
- 360 keyword "Semantic Web".
- 360 keyword "virtual reality".
- 360 keyword "visualization".
- 360 title "Exploring Semantic Social Networks Using Virtual Reality".
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- item-1 hasContent harry-halpin.
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- item-2 hasContent david-j-zielinski.
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- item-3 hasContent rachael-brady.
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- item-4 hasContent glenda-kelly.
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- 60 creator abraham-bernstein.
- 60 creator jane-hunter.
- 60 creator jin-song-dong.
- 60 creator simon-ferndriger.
- 60 creator yuan-fang-li.
- 60 creator yuzhang-feng.
- 60 type InProceedings.
- 60 label "Enhancing Semantic Web Services with Inheritance".
- 60 sameAs 60.
- 60 abstract "Currently proposed SemanticWeb Services technologies allow the semantic description of Web services so that software agents are able to discover, invoke, compose and monitor these services with a high degree of automation. This is achieved by marking up services with ontology-based semantic descriptions. The OWL Services (OWL-S) ontology is an upper ontology in OWL language, providing essential vocabularies to semantically describe Web services. Currently OWL-S services can only be developed independently, if one service is unavailable then finding a suitable alternative would require an expensive and difficult global search/match. It is desirable to have a new OWL-S construct that can systematically support substitution tracing as well as incremental development and reuse for services. Introducing inheritance relationship (IR) into OWLS is a natural solution. However, OWL-S, as well as most of the other currently discussed formalisms for Semantic Web Services such as WSMO or SAWSDL, has yet to define a concrete and self-contained mechanism of establishing inheritance relationships among services, which we believe is very important for the automated creation and discovery of Web services as well as human organization of services into a taxonomy-like structure. In this paper, we extend OWL-S with the possibility to define and maintain inheritance relationships between services. Through the definition of an additional “inheritance profile”, inheritance relationships can be stated and reasoned about. Two types of IRs are allowed to grant service developers the choice to respect the “contract” between services or not. The proposed inheritance framework has also been implemented and the prototype will be discussed as well.".
- 60 hasAuthorList authorList.
- 60 hasTopic Semantic_Web.
- 60 isPartOf proceedings.
- 60 keyword "OWL-S".
- 60 keyword "Semantic Web services".
- 60 keyword "inheritance".
- 60 keyword "service composition".
- 60 keyword "service discovery".
- 60 title "Enhancing Semantic Web Services with Inheritance".
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- item-1 hasContent simon-ferndriger.
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- item-2 hasContent abraham-bernstein.
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- item-3 hasContent jin-song-dong.