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SIGMOD
2012
ACM
220views Database» more  SIGMOD 2012»
13 years 9 months ago
GUPT: privacy preserving data analysis made easy
It is often highly valuable for organizations to have their data analyzed by external agents. However, any program that computes on potentially sensitive data risks leaking inform...
Prashanth Mohan, Abhradeep Thakurta, Elaine Shi, D...
SIGMOD
2012
ACM
226views Database» more  SIGMOD 2012»
13 years 9 months ago
SkewTune: mitigating skew in mapreduce applications
We present an automatic skew mitigation approach for userdefined MapReduce programs and present SkewTune, a system that implements this approach as a drop-in replacement for an e...
YongChul Kwon, Magdalena Balazinska, Bill Howe, Je...
SIGIR
2012
ACM
13 years 9 months ago
Cognos: crowdsourcing search for topic experts in microblogs
Finding topic experts on microblogging sites with millions of users, such as Twitter, is a hard and challenging problem. In this paper, we propose and investigate a new methodolog...
Saptarshi Ghosh, Naveen Kumar Sharma, Fabrí...
TKDE
2012
208views Formal Methods» more  TKDE 2012»
13 years 9 months ago
A Knowledge-Driven Approach to Activity Recognition in Smart Homes
Abstract—This paper introduces a knowledge-driven approach to real-time, continuous activity recognition based on multisensor data streams in smart homes. The approach goes beyon...
Liming Chen, Chris D. Nugent, Hui Wang
EDBT
2012
ACM
214views Database» more  EDBT 2012»
13 years 9 months ago
An optimization framework for map-reduce queries
We present an effective optimization framework for general SQLlike map-reduce queries, which is based on a novel query algebra and uses a small number of higher-order physical ope...
Leonidas Fegaras, Chengkai Li, Upa Gupta
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