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MOBICOM
2009
ACM
14 years 3 months ago
Revenue maximization and distributed power allocation in cognitive radio networks
Cognitive radio is an enabling technology that allows unlicensed users to opportunistically access the spectrum in order to enhance the spectrum efficiency. In this paper, we cons...
Shaolei Ren, Mihaela van der Schaar
SIGIR
2009
ACM
14 years 3 months ago
Query dependent pseudo-relevance feedback based on wikipedia
Pseudo-relevance feedback (PRF) via query-expansion has been proven to be effective in many information retrieval (IR) tasks. In most existing work, the top-ranked documents from...
Yang Xu, Gareth J. F. Jones, Bin Wang
IDEAS
2008
IEEE
80views Database» more  IDEAS 2008»
14 years 3 months ago
Improved count suffix trees for natural language data
With more and more natural language text stored in databases, handling respective query predicates becomes very important. Optimizing queries with predicates includes (sub)string ...
Guido Sautter, Cristina Abba, Klemens Böhm
INFOCOM
2008
IEEE
14 years 3 months ago
Towards Optimal Resource Allocation in Partial-Fault Tolerant Applications
—We introduce Zen, a new resource allocation framework that assigns application components to node clusters to achieve high availability for partial-fault tolerant (PFT) applicat...
Nikhil Bansal, Ranjita Bhagwan, Navendu Jain, Yoon...
GLOBECOM
2007
IEEE
14 years 3 months ago
A Measurement Study of Piece Population in BitTorrent
—BitTorrent is the most popular peer-to-peer software for file sharing, which has contributed to a significant portion of today’s Internet traffic. Many measurement studies ...
Cameron Dale, Jiangchuan Liu