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SIGMOD
2012
ACM
223views Database» more  SIGMOD 2012»
13 years 1 days ago
MaskIt: privately releasing user context streams for personalized mobile applications
The rise of smartphones equipped with various sensors has enabled personalization of various applications based on user contexts extracted from sensor readings. At the same time i...
Michaela Götz, Suman Nath, Johannes Gehrke
CHI
2008
ACM
15 years 10 months ago
Access control by testing for shared knowledge
Controlling the privacy of online content is difficult and often confusing. We present a social access control where users devise simple questions of shared knowledge instead of c...
Michael Toomim, Xianhang Zhang, James Fogarty, Jam...
STOC
2009
ACM
112views Algorithms» more  STOC 2009»
15 years 10 months ago
A new approach to auctions and resilient mechanism design
We put forward a new approach to mechanism design, and exemplify it via a new mechanism guaranteeing significant revenue in unrestricted combinatorial auctions. Our mechanism ? su...
Jing Chen, Silvio Micali
PVLDB
2008
146views more  PVLDB 2008»
14 years 9 months ago
Resisting structural re-identification in anonymized social networks
We identify privacy risks associated with releasing network data sets and provide an algorithm that mitigates those risks. A network consists of entities connected by links repres...
Michael Hay, Gerome Miklau, David Jensen, Donald F...
ICWSM
2008
14 years 11 months ago
Social Access Control for Social Media Using Shared Knowledge Questions
Managing privacy of online content is difficult. We present a simple social access control where sharers specify test questions of shared knowledge, such as "what is our scho...
Michael Toomim, Xianhang Zhang, James Fogarty, Nat...