18188 search results - page 3378 / 3638 » Evaluation for Collaborative Systems |
198
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SIGMOD
2012
ACM
13 years 8 months ago
2012
ACM
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...
207
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SIGIR
2012
ACM
13 years 8 months ago
2012
ACM
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...
221
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SIGMETRICS
2012
ACM
13 years 8 months ago
2012
ACM
Energy efficiency and power capping remain growing concerns in server systems. Online applications continue to evolve with new features and dynamic clientdirected processing, res...
204
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TKDE
2012
13 years 8 months ago
2012
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...
177
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EDBT
2012
ACM
13 years 8 months ago
2012
ACM
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...