By Matthias Klusch, Sonia Bergamaschi, Pete Edwards, Paolo Petta
ISBN-10: 3540007598
ISBN-13: 9783540007593
This ebook offers 10 chapters on a number of features of clever info brokers contributed through individuals of the respective AgentLink specific curiosity group.
The papers are geared up in 3 components on agent-based info structures, adaptive info brokers, and coordination of data brokers. additionally integrated are a complete creation and surveys for every of the 3 components.
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Extra info for Intelligent Information Agents: The AgentLink Perspective
Sample text
Query are to be posed as global ones on the GVV. Infosleuth bases 46 D. Beneventano et al. its data analysis on given ontologies (rather than building them) and provides visibility of data related only to the specified queries. e integration and if required also querying, while Infosleuth is devoted to directly query an information source, once an ontology has been explicitly given by humans. In fact, the integration process differs in that MIKS aims at building ontologies directly from the content of the data source, inferring the relationships within the collection of concepts.
Name) where year = 2002 Now, let us suppose that the integration designer introduces the extensional knowledge that the local classes Student and Professor are disjoint. name is empty and thus Q has to be reformulated only on the local class Student, as follows: Q: select email from Student where year = 2002 and tax < 200 This example shows the main achievements of semantic query optimization of our method: (1) the minimization of the number of sources to be accessed and (2) the maximization of the selectivity of the query sent to the sources.
Bergamaschi , S. Lodi , C. Sartori. Consistency Checking in Complex Object Database Schemata with Integrity Constraints. IEEE Transactions on Knowledge and Data Engineering, 10, 567–598, 1998. 30. S. Bergamaschi , B. Nebel. Acquisition and Validation of Complex Object Database Schemata Supporting Multiple Inheritance. Journal of Applied Intelligence, 4, 185–203, 1994. 31. D. Beneventano , S. Bergamaschi , C. Sartori. Semantic Query Optimization by Subsumption in OODB. Flexible Query Answering Systems, Datalogiske Skrifter series, 62, Roskilde Denmark, 1996.
Intelligent Information Agents: The AgentLink Perspective by Matthias Klusch, Sonia Bergamaschi, Pete Edwards, Paolo Petta
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