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Issue No.08 - August (2011 vol.23)
pp: 1138-1153
Kuang Chen , University of California, Berkeley, Berkeley
Harr Chen , Massachusetts Institute of Technology, Cambridge
Neil Conway , University of California, Berkeley, Berkeley
Joseph M. Hellerstein , University of California, Berkeley, Berkeley
Tapan S. Parikh , University of California, Berkeley, Berkeley
Data quality is a critical problem in modern databases. data-entry forms present the first and arguably best opportunity for detecting and mitigating errors, but there has been little research into automatic methods for improving data quality at entry time. In this paper, we propose Usher, an end-to-end system for form design, entry, and data quality assurance. Using previous form submissions, Usher learns a probabilistic model over the questions of the form. Usher then applies this model at every step of the data-entry process to improve data quality. Before entry, it induces a form layout that captures the most important data values of a form instance as quickly as possible and reduces the complexity of error-prone questions. During entry, it dynamically adapts the form to the values being entered by providing real-time interface feedback, reasking questions with dubious responses, and simplifying questions by reformulating them. After entry, it revisits question responses that it deems likely to have been entered incorrectly by reasking the question or a reformulation thereof. We evaluate these components of Usher using two real-world data sets. Our results demonstrate that Usher can improve data quality considerably at a reduced cost when compared to current practice.
Data quality, data entry, form design, adaptive form.
Kuang Chen, Harr Chen, Neil Conway, Joseph M. Hellerstein, Tapan S. Parikh, "Usher: Improving Data Quality with Dynamic Forms", IEEE Transactions on Knowledge & Data Engineering, vol.23, no. 8, pp. 1138-1153, August 2011, doi:10.1109/TKDE.2011.31
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