|Author||Geisler, Sandra ♦ Quix, Christoph ♦ Weber, Sven ♦ Jarke, Matthias|
|Source||ACM Digital Library|
|Publisher||Association for Computing Machinery (ACM)|
|Subject Domain (in DDC)||Computer science, information & general works ♦ Data processing & computer science|
|Subject Keyword||Data streams ♦ Data quality assessment ♦ Data quality control ♦ Ontologies|
|Abstract||Data Stream Management Systems (DSMS) provide real-time data processing in an effective way, but there is always a tradeoff between data quality (DQ) and performance. We propose an ontology-based data quality framework for relational DSMS that includes DQ measurement and monitoring in a transparent, modular, and flexible way. We follow a threefold approach that takes the characteristics of relational data stream management for DQ metrics into account. While (1) Query Metrics respect changes in data quality due to query operations, (2) Content Metrics allow the semantic evaluation of data in the streams. Finally, (3) Application Metrics allow easy user-defined computation of data quality values to account for application specifics. Additionally, a quality monitor allows us to observe data quality values and take counteractions to balance data quality and performance. The framework has been designed along a DQ management methodology suited for data streams. It has been evaluated in the domains of transportation systems and health monitoring.|
|Description||Author Affiliation: RWTH Aachen University, Aachen, Germany (Geisler, Sandra; Weber, Sven); Fraunhofer Institute for Applied Information Technology and RWTH Aachen University, Sankt Augustin, Germany (Quix, Christoph); RWTH Aachen University and Fraunhofer Institute for Applied Information Technology, Aachen, Germany (Jarke, Matthias)|
|Age Range||18 to 22 years ♦ above 22 year|
|Education Level||UG and PG|
|Learning Resource Type||Article|
|Publisher Place||New York|
|Journal||Journal of Data and Information Quality (JDIQ)|
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