A Logic Programming Approach to the Integration, Repairing and Querying of Inconsistent Databases
Proceedings of the 17th International Conference on Logic Programming
A Logic Framework for the Integration of Databases
ISMIS '02 Proceedings of the 13th International Symposium on Foundations of Intelligent Systems
Integrating and Managing Conflicting Data
PSI '02 Revised Papers from the 4th International Andrei Ershov Memorial Conference on Perspectives of System Informatics: Akademgorodok, Novosibirsk, Russia
A technique for information system integration
ISTA '01 Proceedings of the 2001 international conference on Information systems technology and its applications - Volume P-2
Data & Knowledge Engineering
Tackling inconsistencies in data integration through source preferences
Proceedings of the 2004 international workshop on Information quality in information systems
Information Systems - Special issue: Data quality in cooperative information systems
Accommodating instance heterogeneities in database integration
Decision Support Systems
FuSem: exploring different semantics of data fusion
VLDB '07 Proceedings of the 33rd international conference on Very large data bases
Towards Relational Inconsistent Databases with Functional Dependencies
KES '08 Proceedings of the 12th international conference on Knowledge-Based Intelligent Information and Engineering Systems, Part II
ACM Computing Surveys (CSUR)
Data fusion: resolving data conflicts for integration
Proceedings of the VLDB Endowment
Subsumption and complementation as data fusion operators
Proceedings of the 13th International Conference on Extending Database Technology
Polymorphic queries for P2P systems
Information Systems
Preferred generalized answers for inconsistent databases
ISMIS'06 Proceedings of the 16th international conference on Foundations of Intelligent Systems
Declarative data fusion – syntax, semantics, and implementation
ADBIS'05 Proceedings of the 9th East European conference on Advances in Databases and Information Systems
A framework for merging, repairing and querying inconsistent databases
ADBIS'06 Proceedings of the 10th East European conference on Advances in Databases and Information Systems
A framework for storing and providing aggregated governmental linked open data
EGOVIS'12/EDEM'12 Proceedings of the 2012 Joint international conference on Electronic Government and the Information Systems Perspective and Electronic Democracy, and Proceedings of the 2012 Joint international conference on Advancing Democracy, Government and Governance
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Conflict tolerant queries are a new way of dealing with instance level conflicts in data integrated from multiple sources. In contrast to the traditional approach of resolving such conflicts during schema integration using aggregation functions, we establish a query model and processing techniques to tolerate these conflicts at query time to a degree specified by the users. Resolutions are only performed to produce conflict-free results. Currently we support 3 levels of conflict tolerance: High Confidence, Random Evidence, and Possible At All and allow user-defined functions to be used for conflict resolution. The approach reduces the overhead of conflict detection and resolution and lends itself to new query optimization techniques. Fundamentally, our approach allows users to handle conflict at a coarse granularity to achieve better query performance when conflict resolution requirements are relaxed and when data contain occasional conflicts.