Computer science colloquia: Privacy-preserving Participatory Sensing for Multidimensional Data
| Date/Time: | Tuesday, 06 Apr 2010 at 3:40 pm |
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| Location: | B29 Atanasoff Hall |
| Cost: | Free |
| Phone: | 515-294-6516 |
| Channel: | College of Liberal Arts and Sciences |
| Categories: | Lectures |
| Actions: | Download iCal/vCal | Email Reminder |
The emerging applications in participatory sensing rely on individuals to share local and personal data with others to produce aggregated models and knowledge. In this setting, privacy is an important consideration, and lack of privacy could discourage widespread adoption of many exciting applications. In participatory sensing applications, multidimensional data, such as vectors of attributes that include location and time fields, provide the right perspective to understand the model of the sensed environment.
He will present a privacy-preserving participatory sensing scheme for multidimensional data, which uses negative surveys. When reporting data, the individual node (participant) randomly selects a value from the set complement of the data values, one such value for each dimension, and sends the vector of negative values to the information collection server. Hence, the server can reconstruct the histograms and probability density functions of the original distributions of sensed values, without reconstructing the individual data items. The reconstruction error decreases as the population of participants increases. He also will show that when applying the privacy-preserving technique for multi-dimensional data to single dimensional continuous data, we can achieve better performance.
He is currently an assistant professor of electrical engineering at the University of Nebraska-Lincoln. Before that, she was an assistant professor of computer science at the University of New Mexico. Her research focuses on pervasive computing, privacy-preserving techniques, etc. He received her Ph.D. from UIUC in 2008, and an M.S. from ECE Department at UIUC and M.Eng. from the Department of Automation at Tsinghua University, in 2000 and 1998 respectively. She received her B.S. from the Department of Automation at the Harbin Engineering University in 1995. During August 2000 to January 2005, He was a software engineer in Cisco Systems, Inc. She received the Mavis Memorial Fund Scholarship Award from College of Engineering at UIUC in 2006, and the C. W. Gear Outstanding Graduate Award in 2007 from the Department of Computer Science at UIUC. She is also a recipient of the Vodafone Fellowship from 2005 to 2008, and the NSF TRUST Fellowship in 2007.