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» Output perturbation with query relaxation
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PVLDB
2008
101views more  PVLDB 2008»
13 years 10 months ago
Output perturbation with query relaxation
Given a dataset containing sensitive personal information, a statistical database answers aggregate queries in a manner that preserves individual privacy. We consider the problem ...
Xiaokui Xiao, Yufei Tao
PODS
2009
ACM
134views Database» more  PODS 2009»
14 years 11 months ago
Relationship privacy: output perturbation for queries with joins
We study privacy-preserving query answering over data containing relationships. A social network is a prime example of such data, where the nodes represent individuals and edges r...
Vibhor Rastogi, Michael Hay, Gerome Miklau, Dan Su...
ISCAS
2005
IEEE
121views Hardware» more  ISCAS 2005»
14 years 4 months ago
On phase noise in quadrature cross-coupled oscillators
– A cross-coupled relaxation oscillator has two outputs of the same frequency, which are in quadrature. In this paper a comparative study of the phase noise in a cross-coupled re...
Luís Bica Oliveira, Ahmed Allam, Igor M. Fi...
DASFAA
2008
IEEE
151views Database» more  DASFAA 2008»
14 years 19 days ago
Efficient Top-k Search Across Heterogeneous XML Data Sources
An important issue arising from XML query relaxation is how to efficiently search the top-k best answers from a large number of XML data sources, while minimizing the searching cos...
Jianxin Li, Chengfei Liu, Jeffrey Xu Yu, Rui Zhou
VLDB
2009
ACM
130views Database» more  VLDB 2009»
14 years 11 months ago
Multi-dimensional top-k dominating queries
Abstract The top-k dominating query returns k data objects which dominate the highest number of objects in a dataset. This query is an important tool for decision support since it ...
Man Lung Yiu, Nikos Mamoulis