Matches in ScholarlyData for { ?s ?p ?o. }
- 177 label "Semantic Grounding of Tag Relatedness in Social Bookmarking Systems".
- 177 sameAs 177.
- 177 abstract "Collaborative tagging systems have nowadays become important data sources for populating semantic web applications. For tasks like synonym detection and discovery of concept hierarchies, many researchers introduced measures of tag similarity. Even though most of these measures appear very natural, their design often seems to be rather ad hoc, and the underlying assumptions on the notion of similarity are not made explicit. A more systematic characterization and validation of tag similarity in terms of formal representations of knowledge is still lacking. Here we address this issue and anayze several measures of tag similarity: Each measure is computed on data from the social bookmarking system del.icio.us and a semantic grounding is provided by mapping pairs of similar tags in the folksonomy to pairs of synsets in Wordnet, where we use validated measures of semantic distance to characterize the semantic relation between the mapped tags. This exposes important features of the investigated measures and indicates which measures are better suited in the context of a given semantic application.".
- 177 hasAuthorList authorList.
- 177 hasTopic Semantic_Web.
- 177 isPartOf proceedings.
- 177 keyword "WordNet".
- 177 keyword "emergent semantics".
- 177 keyword "folksonomies".
- 177 keyword "semantic grounding".
- 177 keyword "similarity measures".
- 177 title "Semantic Grounding of Tag Relatedness in Social Bookmarking Systems".
- authorList type List.
- authorList hasFirstItem item-1.
- authorList hasItem item-1.
- authorList hasItem item-2.
- authorList hasItem item-3.
- authorList hasItem item-4.
- authorList hasLastItem item-4.
- item-1 type ListItem.
- item-1 hasContent ciro-cattuto.
- item-1 next item-2.
- item-2 type ListItem.
- item-2 hasContent dominik-benz.
- item-2 next item-3.
- item-2 previous item-1.
- item-3 type ListItem.
- item-3 hasContent andreas-hotho.
- item-3 next item-4.
- item-3 previous item-2.
- item-4 type ListItem.
- item-4 hasContent gerd-stumme.
- item-4 previous item-3.
- 178 creator christoph-pinkel.
- 178 creator georg-lausen.
- 178 creator michael-schmidt.
- 178 creator norbert-kuechlin.
- 178 creator thomas-hornung.
- 178 type InProceedings.
- 178 label "An Experimental Comparison of RDF Data Management Approaches in a SPARQL Benchmark Scenario".
- 178 sameAs 178.
- 178 abstract "Efficient RDF data management is one of the cornerstones in realizing the Semantic Web vision. In the past, different RDF storage strategies have been proposed, ranging from simple triple stores to more advanced techniques like clustering or vertical partitioning on the predicates. We present an experimental comparison of existing storage strategies on top of the SP^2Bench SPARQL performance benchmark suite and put the results into context by comparing them to a purely relational model of the benchmark scenario. We observe that (1) in terms of performance and scalability, a simple triple store built on top of a column-store DBMS is competitive to the vertically partitioned approach when choosing a physical (predicate, subject, object) sort order, (2) in our scenario with real-world queries, none of the approaches scales to documents containing tens of millions of RDF triples, and (3) none of the approaches yet can compete with a purely relational model. We conclude that future research is necessary to further bring forward RDF data management.".
- 178 hasAuthorList authorList.
- 178 hasTopic Semantic_Web.
- 178 isPartOf proceedings.
- 178 keyword "Benchmark".
- 178 keyword "Evaluation".
- 178 keyword "RDF Data Management".
- 178 keyword "SPARQL".
- 178 keyword "Vertical Partitioning".
- 178 title "An Experimental Comparison of RDF Data Management Approaches in a SPARQL Benchmark Scenario".
- authorList type List.
- authorList hasFirstItem item-1.
- authorList hasItem item-1.
- authorList hasItem item-2.
- authorList hasItem item-3.
- authorList hasItem item-4.
- authorList hasItem item-5.
- authorList hasLastItem item-5.
- item-1 type ListItem.
- item-1 hasContent michael-schmidt.
- item-1 next item-2.
- item-2 type ListItem.
- item-2 hasContent thomas-hornung.
- item-2 next item-3.
- item-2 previous item-1.
- item-3 type ListItem.
- item-3 hasContent norbert-kuechlin.
- item-3 next item-4.
- item-3 previous item-2.
- item-4 type ListItem.
- item-4 hasContent georg-lausen.
- item-4 next item-5.
- item-4 previous item-3.
- item-5 type ListItem.
- item-5 hasContent christoph-pinkel.
- item-5 previous item-4.
- 180 creator dengping-wei.
- 180 creator ji-wang.
- 180 creator ting-wang.
- 180 creator yaodong-chen.
- 180 type InProceedings.
- 180 label "Extracting Semantic Constraint from Description Text for Semantic Web Service Discovery".
- 180 sameAs 180.
- 180 abstract "Various semantic web service discovery techniques have been proposed, many of which perform the profile based service signature (I/O) matching. However, the service I/O concepts are not sufficient to discover web service accurately. This paper suggests a new method to enhance the semantic description of semantic web service by using the semantic constraints of service I/O concepts in specific context. The semantic constraints described in a constraint graph are extracted automatically from the parsing results of the service description text by a set of heuristic rules. The corresponding semantic web service matchmaker performs not only the profile’s semantic matching but also the matching of their semantic constraints with the help of a constraint graph based matchmaking algorithm. The experiment results are encouraging when applying the semantic constraint to discover semantic web services on the service retrieval test collection OWLS-TC v2.".
- 180 hasAuthorList authorList.
- 180 hasTopic Semantic_Web.
- 180 isPartOf proceedings.
- 180 keyword "discovery".
- 180 keyword "semantic constraint extraction".
- 180 keyword "semantic constraint".
- 180 keyword "semantic web service".
- 180 title "Extracting Semantic Constraint from Description Text for Semantic Web Service Discovery".
- authorList type List.
- authorList hasFirstItem item-1.
- authorList hasItem item-1.
- authorList hasItem item-2.
- authorList hasItem item-3.
- authorList hasItem item-4.
- authorList hasLastItem item-4.