Endorsements, licensing, and insurance for distributed system services
CCS '94 Proceedings of the 2nd ACM Conference on Computer and communications security
Flexible queries over semistructured data
PODS '01 Proceedings of the twentieth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Conceptual model of web service reputation
ACM SIGMOD Record
EDBT '02 Proceedings of the 8th International Conference on Extending Database Technology: Advances in Database Technology
Generalization and a Framework for Query Modification
Proceedings of the Sixth International Conference on Data Engineering
DAML-S: Web Service Description for the Semantic Web
ISWC '02 Proceedings of the First International Semantic Web Conference on The Semantic Web
Importing the Semantic Web in UDDI
CAiSE '02/ WES '02 Revised Papers from the International Workshop on Web Services, E-Business, and the Semantic Web
On Assurance Structures for WWW Commerce
FC '98 Proceedings of the Second International Conference on Financial Cryptography
Efficient utility functions for ceteris paribus preferences
Eighteenth national conference on Artificial intelligence
Preference SQL: design, implementation, experiences
VLDB '02 Proceedings of the 28th international conference on Very Large Data Bases
Assessing web services quality for call-by-call outsourcing
WISEW'03 Proceedings of the Fourth international conference on Web information systems engineering workshops
Query relaxation using malleable schemas
Proceedings of the 2007 ACM SIGMOD international conference on Management of data
Process-context aware matchmaking for web service composition
Journal of Network and Computer Applications
Order-preserving optimization of twig queries with structural preferences
IDEAS '08 Proceedings of the 2008 international symposium on Database engineering & applications
Exploiting Ontological Structure for Complex Preference Assembly
AI '08 Proceedings of the 21st Australasian Joint Conference on Artificial Intelligence: Advances in Artificial Intelligence
Personalization in e-commerce applications
The adaptive web
Querying databases with taxonomies
ER'10 Proceedings of the 29th international conference on Conceptual modeling
How do we measure and improve the quality of a hierarchical ontology?
Journal of Systems and Software
Providing metrics and automatic enhancement for hierarchical taxonomies
Information Processing and Management: an International Journal
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We present enhancements for UDDI / DAML-S registries allow-ing cooperative discovery and selection of Web services with a focus on personalization. To find the most useful service in each instance of a request, not only explicit parameters of the request have to be matched against the service offers. Also user preferences or implicit assumptions of a user with respect to common knowledge in a certain domain have to be considered to improve the quality of service provisioning. In the area of Web services the notion of service ontologies together with cooperative answering techniques can take a lot of this responsibility. However, without quality assessments for the relaxation of service requests and queries a personalized service discovery and selection is virtually impossible. This paper focuses on assessing the semantic meaning of query relaxation plans over multiple conceptual views of the service ontology, each one representing a soft query constraint of the user request. Our focus is on the question what constitutes a minimum amount of necessary relaxation to answer each individual request in a cooperative manner. Incorporating such assessments as early as possible we propose to integrate ontology-based discovery directly into UDDI directories or query facilities in service provisioning portals. Using the quality assessments presented here, this integration promises to propel today's Web services towards an intuitive user-centered service provisioning.