Generalized Search Trees for Database Systems
VLDB '95 Proceedings of the 21th International Conference on Very Large Data Bases
Efficient Matchmaking and Directory Services
WI '03 Proceedings of the 2003 IEEE/WIC International Conference on Web Intelligence
Large Scale, Type-Compatible Service Composition
ICWS '04 Proceedings of the IEEE International Conference on Web Services
Exploiting organisational information for service coordination in multiagent systems
Proceedings of the 7th international joint conference on Autonomous agents and multiagent systems - Volume 1
Service composition with directories
SC'06 Proceedings of the 5th international conference on Software Composition
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In an open environment populated by large numbers of services, automated service composition is a major challenge. In such a setting the efficient interaction of directory-based service discovery with different service composition algorithms is crucial. In this paper we present a directory with dedicated features for service composition. In order to optimize the interaction of the directory with different service composition algorithms exploiting application-specific heuristics, the directory supports user-defined selection and ranking functions written in a declarative query language. Inside the directory queries are transformed in order to enable a best-first search for matching directory entries, efficiently pruning the search space.