BibSonomyburst/user/eswc2008/semantic-web-services-2BibSonomy RSS feed for /user/eswc2008/semantic-web-services-22012-02-17T09:16:03+01:00http://www.bibsonomy.org/bibtex/2cd8b469b8da63e07df36d51c92fc8868/eswc2008eswc20082008-05-28T14:50:03+02:00ontology localization ontologies multilingual semantic-web-services-2 <span class="authorEditorList"><a href="/author/Espinoza">Mauricio Espinoza</a>, <a href="/author/Gómez-Pérez">Asunción Gómez-Pérez</a>, and <a href="/author/Mena">Eduardo Mena</a> </span><em>Proceedings of the 5th European Semantic Web Conference, </em><em>Berlin, Heidelberg, </em><em>Springer Verlag, </em>(<em>June 2008</em>)Wed May 28 14:50:03 CEST 2008Berlin, HeidelbergProceedings of the 5th European Semantic Web ConferenceJuneLNCSEnriching an Ontology with Multilingual Information2008ontology localization ontologies multilingual semantic-web-services-2 Typically ontologies are described in a determined natural language. Organizations working in a multilingual environment demand multilingual ontologies. To solve this problem we propose LabelTranslator, a NeOn plug-in that automatically localize ontologies. Ontology localization consists in adapting an ontology to a concrete language and culture community. LabelTranslator takes as input an ontology whose labels are described in a source natural language and obtains the most probable translation of each ontology label in a target natural language. Our main contribution is the automatization of this process which reduces human efforts to localize manually the ontology. First, our system uses a translation service which obtains automatic translations of each ontology label (name of an ontology term) in English, German, or Spanish by consulting different linguistic resources such as lexical databases, bilingual dictionaries, and terminologies. Second, a ranking method is used to sort each ontology label according to similarity with its lexical and structural context. The experiments performed in order to evaluate the quality of translation show that our approach is a good approximation to enrich an ontology with multilingual information.http://www.bibsonomy.org/bibtex/2e18420bd48a40bb0cf79265cb071c2b6/eswc2008eswc20082008-05-28T14:50:00+02:00contracting web services wsmo semantic choreography service semantic-web-services-2 <span class="authorEditorList"><a href="/author/Roman">Dumitru Roman</a>, <a href="/author/Kifer">Michael Kifer</a>, and <a href="/author/Fensel">Dieter Fensel</a> </span><em>Proceedings of the 5th European Semantic Web Conference, </em><em>Berlin, Heidelberg, </em><em>Springer Verlag, </em>(<em>June 2008</em>)Wed May 28 14:50:00 CEST 2008Berlin, HeidelbergProceedings of the 5th European Semantic Web ConferenceJuneLNCSWSMO Choreography: From Abstract State Machines to Concurrent Transaction Logic2008contracting web services wsmo semantic choreography service semantic-web-services-2 Several approaches to semantic Web services, including OWL-S, SWSF, and WSMO, have been proposed in the literature with the aim to enable automation of various tasks related to Web services, such as discovery, contracting, enactment, monitoring, and mediation. The ability to specify processes and to reason about them is central to these initiatives. In this paper we analyze the WSMO choreography model, which is based on Abstract State Machines (ASMs), and propose a methodology for generating WSMO choreography from visual specifications. We point out the limitations of the current WSMO model and propose a faithful extension that is based on Concurrent Transaction Logic (CTR). The advantage of a CTR-based model is that it uniformly captures a number of aspects that previously required separate mechanisms or were not captured at all. These include process specification, contracting for services, service enactment, and reasoning.http://www.bibsonomy.org/bibtex/23e82aaa551afc06bde6aa5cb3b3bdcb3/eswc2008eswc20082008-05-28T14:49:56+02:00semantic htn web service composition planning semantic-web-services-2 <span class="authorEditorList"><a href="/author/Lin">Naiwen Lin</a>, <a href="/author/Kuter">Ugur Kuter</a>, and <a href="/author/Sirin">Evren Sirin</a> </span><em>Proceedings of the 5th European Semantic Web Conference, </em><em>Berlin, Heidelberg, </em><em>Springer Verlag, </em>(<em>June 2008</em>)Wed May 28 14:49:56 CEST 2008Berlin, HeidelbergProceedings of the 5th European Semantic Web ConferenceJuneLNCSWeb Service Composition with User Preferences2008semantic htn web service composition planning semantic-web-services-2 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.