Principles of dataspace systems
Proceedings of the twenty-fifth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Model management 2.0: manipulating richer mappings
Proceedings of the 2007 ACM SIGMOD international conference on Management of data
iTrails: pay-as-you-go information integration in dataspaces
VLDB '07 Proceedings of the 33rd international conference on Very large data bases
Bootstrapping pay-as-you-go data integration systems
Proceedings of the 2008 ACM SIGMOD international conference on Management of data
Learning to create data-integrating queries
Proceedings of the VLDB Endowment
The design and implementation of OGSA-DQP: A service-based distributed query processor
Future Generation Computer Systems
BNCOD 26 Proceedings of the 26th British National Conference on Databases: Dataspace: The Final Frontier
Concise and expressive mappings with +Spicy
Proceedings of the VLDB Endowment
Feedback-based annotation, selection and refinement of schema mappings for dataspaces
Proceedings of the 13th International Conference on Extending Database Technology
Pay-as-you-go data integration for linked data: opportunities, challenges and architectures
SWIM '12 Proceedings of the 4th International Workshop on Semantic Web Information Management
Identifying and weighting integration hypotheses on open data platforms
Proceedings of the First International Workshop on Open Data
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The vision of dataspaces proposes an alternative to classical data integration approaches with reduced up-front costs followed by incremental improvement on a pay-as-you-go basis. In this paper, we demonstrate DSToolkit, a system that allows users to provide feedback on results of queries posed over an integration schema. Such feedback is then used to annotate the mappings with their respective precision and recall. The system then allows a user to state the expected levels of precision (or recall) that the query results should exhibit and, in order to produce those results, the system selects those mappings that are predicted to meet the stated constraints.