Improving data warehouse and business information quality: methods for reducing costs and increasing profits
Introduction to Algorithms: A Creative Approach
Introduction to Algorithms: A Creative Approach
Data integration: a theoretical perspective
Proceedings of the twenty-first ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
Real-world Data is Dirty: Data Cleansing and The Merge/Purge Problem
Data Mining and Knowledge Discovery
Data Quality: The Accuracy Dimension
Data Quality: The Accuracy Dimension
Quality-driven Integration of Heterogenous Information Systems
VLDB '99 Proceedings of the 25th International Conference on Very Large Data Bases
Using Web Service Technologies to Create an Information Broker: An Experience Report
Proceedings of the 26th International Conference on Software Engineering
Information Systems - Special issue: Data quality in cooperative information systems
Completeness of integrated information sources
Information Systems - Special issue: Data quality in cooperative information systems
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Access to multisource heterogeneous data is a fundamental research issue in a variety of contexts, including syndicated data retrieval, Web service selection and cooperative information systems In these variable contexts, the brokering approach to multisource data access provides greater flexibility with respect to the more traditional data integration The general brokering model assumes that the broker is submitted a query and has the responsibility to optimize the response along specified parameters such as time efficiency, completeness, and consistency This paper takes a data quality perspective on data brokering and considers data accuracy Furthermore, the data quality literature assumes that metadata are associated with data to describe their quality Metadata support data selection without viewing and assessing data directly On the contrary, previous brokering approaches view data This paper compares previous results with those of a brokering approach based on metadata which assumes that actual data are transparent to the broker Testing results comparing the delta between the data visibility and transparency approaches to data brokering are presented.