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Kuang Chen


Publications by Kuang Chen (bibliography)

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Chen, Kuang, Hellerstein, Joseph M. and Parikh, Tapan S. (2010): Designing adaptive feedback for improving data entry accuracy. In: Proceedings of the 2010 ACM Symposium on User Interface Software and Technology 2010. pp. 239-248. http://doi.acm.org/10.1145/1866029.1866068

Data quality is critical for many information-intensive applications. One of the best opportunities to improve data quality is during entry. Usher provides a theoretical, data-driven foundation for improving data quality during entry. Based on prior data, Usher learns a probabilistic model of the dependencies between form questions and values. Using this information, Usher maximizes information gain. By asking the most unpredictable questions first, Usher is better able to predict answers for the remaining questions. In this paper, we use Usher's predictive ability to design a number of intelligent user interface adaptations that improve data entry accuracy and efficiency. Based on an underlying cognitive model of data entry, we apply these modifications before, during and after committing an answer. We evaluated these mechanisms with professional data entry clerks working with real patient data from six clinics in rural Uganda. The results show that our adaptations have the potential to reduce error (by up to 78%), with limited effect on entry time (varying between -14% and +6%). We believe this approach has wide applicability for improving the quality and availability of data, which is increasingly important for decision-making and resource allocation.

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