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- 115 creator ugur-kuter.
- 115 type InProceedings.
- 115 label "Web Service Composition with User Preferences".
- 115 sameAs 115.
- 115 abstract "In Web Service Composition (WSC) problems, the composition process generates a solution, i.e., a composition (or a plan) of atomic services, whose execution achieves some objectives on the Web. Existing research on Web service composition generally assumed that these objectives are absolute; i.e., the service-composition algorithms must achieve all of them in order to generate successful outcomes; otherwise, the composition process fails altogether. The most straightforward example is the use of OWL-S process models that specifically tell a composition algorithm how to achieve a functionality on the Web. However, in many WSC problems, it is also desirable to achieve users' preferences that are not absolute objectives, but a solution composition generated by a WSC algorithm must satisfy those preferences as much as possible. In this paper, we first describe a way to augment OWL-S process models by qualitative user preferences. We achieve this by mapping a given set of process models and preferences into a planning language for representing Hierarchical Task Networks (HTNs). We then present SCUP, our new WSC algorithm that performs a best-first search over the possible HTN-style task decompositions by heuristically scoring those decompositions based on ontological reasoning over the input preferences. Finally, we discuss our theoretical and experimental results on the SCUP algorithm.".
- 115 hasAuthorList authorList.
- 115 hasTopic Semantic_Web.
- 115 hasTopic Semantic_Web_Services.
- 115 isPartOf proceedings.
- 115 keyword "htn planning".
- 115 keyword "semantic web service composition".
- 115 title "Web Service Composition with User Preferences".
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- item-1 hasContent naiwen-lin.
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- item-3 hasContent evren-sirin.
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- 119 creator axel-polleres.
- 119 creator jacek-kopecky.
- 119 creator thomas-krennwallner.
- 119 creator waseem-akhtar.
- 119 type InProceedings.
- 119 label "XSPARQL: Traveling between the XML and RDF worlds – and avoiding the XSLT pilgrimage".
- 119 sameAs 119.
- 119 abstract "With currently available tools and languages, translating between an existing XML format and RDF is a tedious and error-prone task. The importance of this problem is acknowledged by the W3C GRDDL working group who faces the issue of extracting RDF data out of existing HTML or XML files, as well as by the Web service community around SAWSDL, who need to perform lowering and lifting between RDF data from a semantic client and XML messages for a Web service. However, at the moment, both these groups rely solely on XSLT transformations between RDF/XML and the respective other XML format at hand. In this paper, we propose a more natural approach for such transformations based on merging XQuery and SPARQL into the novel language XSPARQL. We demonstrate that XSPARQL provides concise and intuitive solutions for mapping between XML and RDF in either direction, addressing both the use cases of GRDDL and SAWSDL. We also provide and describe an initial implementation of an XSPARQL engine, available for user evaluation.".
- 119 hasAuthorList authorList.
- 119 hasTopic SPARQL.
- 119 hasTopic Semantic_Web.
- 119 hasTopic Semantic_Web_Services.
- 119 isPartOf proceedings.
- 119 keyword "grddl".
- 119 keyword "lifting".
- 119 keyword "lowering".
- 119 keyword "sparql".
- 119 keyword "xquery".
- 119 title "XSPARQL: Traveling between the XML and RDF worlds – and avoiding the XSLT pilgrimage".
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- item-1 hasContent waseem-akhtar.
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- 12 creator alun-preece.
- 12 creator edoardo-pignotti.
- 12 creator gary-polhill.
- 12 creator nick-gotts.
- 12 creator peter-edwards.
- 12 type InProceedings.
- 12 label "Enhancing Workflow with a Semantic Description of Scientist's Intent".
- 12 sameAs 12.
- 12 abstract "In the e-Science context, workflow technologies provide a problem-solving environment for researchers by facilitating the creation and execution of experiments from a pool of available services. In this paper we will show how Semantic Web technologies can be used to overcome a limitation of current workflow languages by capturing experimental constraints and goals, which we term scientist's intent. We propose an ontology driven framework for capturing such intent based on workflow metadata combined with SWRL rules. Through the use of an example we will present the key benefits of the proposed framework in terms of enriching workflow output, assisting workflow execution and provenance support. We conclude with a discussion of the issues arising from application of this approach to the domain of social simulation.".
- 12 hasAuthorList authorList.
- 12 hasTopic Collaborative_software.
- 12 hasTopic Logic.
- 12 hasTopic Rule_of_inference.
- 12 hasTopic Semantic_Web.
- 12 isPartOf proceedings.
- 12 keyword "constraints".
- 12 keyword "escience".
- 12 keyword "semantic grid".
- 12 keyword "swrl".
- 12 keyword "workflow".
- 12 title "Enhancing Workflow with a Semantic Description of Scientist's Intent".
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