Data quality and data cleaning are context dependent activities. Starting from this observation, in previous work a context model for the assessment of the quality of a database instance was proposed. In that framework, the context takes the form of a possibly virtual database or data integration system into which a database instance under quality assessment is mapped, for additional analysis and processing, enabling quality assessment. In this work we extend contexts with dimensions, and by doing so, we make possible a multidimensional assessment of data quality assessment. Multidimensional contexts are represented as ontologies written in DatalogĀ±. We use this language for representing dimensional constraints, and dimensional rules, and also for doing query answering based on dimensional navigation, which becomes an important auxiliary activity in the assessment of data. We show ideas and mechanisms by means of examples.

Additional Metadata
Persistent URL dx.doi.org/10.1109/ICDEW.2014.6818333
Conference 2014 IEEE 30th International Conference on Data Engineering Workshops, ICDEW 2014
Citation
Milani, M. (Mostafa), Bertossi, L, & Ariyan, S. (Sina). (2014). Extending contexts with ontologies for multidimensional data quality assessment. Presented at the 2014 IEEE 30th International Conference on Data Engineering Workshops, ICDEW 2014. doi:10.1109/ICDEW.2014.6818333