Usher: Enabling quality data collection on mobile phones
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| Audience/Grade: | College Freshman-Continuing Education |
| Discipline(s): |
Computer Science Electrical Engineering |
| Special Topic(s): | |
| Learning Resource Type: |
Reference - General |
| Media Type: |
WWW |
| Author(s): |
Kuang Chen |
| Description: | Recently, the Director General of the World Health Organization likened the lack of quality health information in low income countries to a "gathering storm", saying, "to make people count, we first need to be able to count." All over the world, the pervasiveness of cellular networks is enabling mobile-based data collection. Community health workers armed with commodity phones are starting to visit the most rural and isolated places to promote health and gather data in mobile forms. Among their challenges, data quality ranks high: a recent study found that mobile-based data quality was ten-times worse than dictation to a human operator. In this talk, we will present an overview of Usher, a system to address this challenge. Usher automates form design, filling, and data quality assurance for mobile phones and other non-traditional data entry settings. Rather than relying on domain experts, Usher learns a probabilistic model over form questions using existing form data. Usher then applies this model at every step of the data entry process to ensure high quality. Before entry, it induces a form layout that captures the most important data values of a form instance as quickly as possible. During entry, it dynamically adapts the form to the values being entered, and provides real-time feedback to guide the data enterer toward more likely values, and to avoid errors. After entry, it re-asks questions that it deems likely to have been entered incorrectly. We evaluated Usher using two real-world data sets. Results demonstrate that each component has the potential to improve data quality considerably, and at a reduced cost when compared to current practice. |
| Rating: | No Rating |
| Related Resources | |
| References: |
Usher - Improving Data Quality With Dynamic Forms |
| Usage Tip | |
| Use of Resource: |
How I use Usher: Enabling quality data collection on mobile phones There is currently an exhibit featuring this research at the UC Berkeley CITRIS Museum in the Sutardja Dai Hall at the University of California at Berkeley |
| Geocentric Data: | |
| Place Name: | University of California at Berkeley Center for Information Technology Research in the Interest of Society CITRIS Technology Museum |
| Place Type: | College/University |
| Place Location: | 345 Sutardja Dai Hall, Berkeley, California 94720 United States |
| West Longitude: | -122.258825 |
| East Longitude: | -122.258047 |
| North Latitude: | 37.875314 |
| South Latitude: | 37.874465 |
| Version Info | |
| Publication Date: | July 2009 |
| Platform/Format: |
WWW |
| Cost: |
Free |
| Download URL: | http://www.youtube.com/watch?v=jdl5ECWtHcU |
| Metadata: |
IEEE LOM Record |
| Collection: |
EP on the GO
NEEDS
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