CIKM '94 Proceedings of the third international conference on Information and knowledge management
Data model and query evaluation in global information systems
Journal of Intelligent Information Systems - Special issue: networked information discovery and retrieval
Mediation in information systems
ACM Computing Surveys (CSUR)
Enhancing database correctness: a statistical approach
SIGMOD '95 Proceedings of the 1995 ACM SIGMOD international conference on Management of data
Communications of the ACM
Managing semantic heterogeneity in databases: a theoretical prospective
PODS '97 Proceedings of the sixteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Communications of the ACM
A product perspective on total data quality management
Communications of the ACM
Your mediators need data conversion!
SIGMOD '98 Proceedings of the 1998 ACM SIGMOD international conference on Management of data
Catching the boat with Strudel: experiences with a Web-site management system
SIGMOD '98 Proceedings of the 1998 ACM SIGMOD international conference on Management of data
Metrics and Models in Software Quality Engineering
Metrics and Models in Software Quality Engineering
Data Quality for the Information Age
Data Quality for the Information Age
Fundamentals of Data Warehouses
Fundamentals of Data Warehouses
Reliability of Answers to Queries in Relational Databases
IEEE Transactions on Knowledge and Data Engineering
A Framework for Analysis of Data Quality Research
IEEE Transactions on Knowledge and Data Engineering
Resolving Attribute Incompatibility in Database Integration: An Evidential Reasoning Approach
Proceedings of the Tenth International Conference on Data Engineering
Object Exchange Across Heterogeneous Information Sources
ICDE '95 Proceedings of the Eleventh International Conference on Data Engineering
Quality-driven Integration of Heterogenous Information Systems
VLDB '99 Proceedings of the 25th International Conference on Very Large Data Bases
Querying Heterogeneous Information Sources Using Source Descriptions
VLDB '96 Proceedings of the 22th International Conference on Very Large Data Bases
A Polygen Model for Heterogeneous Database Systems: The Source Tagging Perspective
VLDB '90 Proceedings of the 16th International Conference on Very Large Data Bases
Towards heterogeneous multimedia information systems: the Garlic approach
RIDE '95 Proceedings of the 5th International Workshop on Research Issues in Data Engineering-Distributed Object Management (RIDE-DOM'95)
Quality-driven geospatial data integration
Proceedings of the 15th annual ACM international symposium on Advances in geographic information systems
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Evaluation ofd ata non-quality in database or datawarehouse systems is a preliminary stage before any data usage and analysis, moreover in the context ofd ata integration where several sources provide more or less redundant or contradictory information items and whose quality is often unknown, imprecise and very heterogeneous. Our application domain is bioinformatics where more than five hundred of semi-structured databanks propose biological information without any quality information (i.e. metadata and statistics describing the production and the management oft he biological data). In order to facilitate the multisource data integration in the context ofd istributed biological databanks, we propose a technique based on the concepts ofq uality contract and data source negotiation for a standard wrapper-mediator architecture. A quality source contract allows to specify quality dimensions necessary to the mediator for data extraction among several distributed resources. The source selection is dynamically computed with the contract negotiation which we propose to include into the mediation and the global query processings before data acquisition. The integration of the multisource biological data is differed for the restitution and combination of the results ofthe global user's query by techniques ofda ta recommendation taking into account source quality requirements.