VAGUE: a user interface to relational databases that permits vague queries
ACM Transactions on Information Systems (TOIS)
Endorsements, licensing, and insurance for distributed system services
CCS '94 Proceedings of the 2nd ACM Conference on Computer and communications security
Preference structures and their numerical representations
Theoretical Computer Science
Learning to map between ontologies on the semantic web
Proceedings of the 11th international conference on World Wide Web
Conceptual model of web service reputation
ACM SIGMOD Record
An Overview of Cooperative Answering in Databases
FQAS '98 Proceedings of the Third International Conference on Flexible Query Answering Systems
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
Preferences; Putting More Knowledge into Queries
VLDB '87 Proceedings of the 13th International Conference on Very Large Data Bases
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
Through different eyes: assessing multiple conceptual views for querying web services
Proceedings of the 13th international World Wide Web conference on Alternate track papers & posters
A service provisioning system for distributed personalization with private data protection
Journal of Systems and Software
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The process of decision making regarding the outsourcing of various tasks in an enterprise's value chain involves consideration of a number of important economic trade offs. Outsourcing decisions in the past have typically been of a strategic nature involving long-term commitment. However, given the emerging technologies of Web services and the growing variety of service providers it seems feasible to utilize the Internet's ubiquity and pervasiveness for outsourcing at least more simple tasks dynamically in a call-by-call manner. However, to make the required decisions in each instance without having to manually assess the quality of each offer an automatic quality assessment based on a mutual service level agreement is essential. In this paper we will investigate the necessary mechanisms and demonstrate their feasibility in a real world use case scenario.