Data Quality Visualization for Preprocessing

Abstract

Abstract. Preprocessing is often the most time-consuming phase in data analysis and interdependent data quality issues a cause of suboptimal modelling results. The design problem addressed in this paper is: what kind of framework can support visualization of data quality issue interdependencies for faster and more effective preprocessing? An object framework was designed that uses constructed features as a basis of visualizations. Six real datasets from business performance measurement system domain were acquired to demonstrate the implementation. The framework was found to be a viable preprocessing analysis supplement to both industry practice of exploratory data analysis and research benchmark of preprocessing combinations.