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PODS
2010
ACM
215views Database» more  PODS 2010»
15 years 2 months ago
An optimal algorithm for the distinct elements problem
We give the first optimal algorithm for estimating the number of distinct elements in a data stream, closing a long line of theoretical research on this problem begun by Flajolet...
Daniel M. Kane, Jelani Nelson, David P. Woodruff
BROADNETS
2004
IEEE
15 years 1 months ago
Capacity-Efficient Protection with Fast Recovery in Optically Transparent Mesh Networks
Survivability becomes increasingly critical in managing high-speed networks as data traffic continues to grow in both size and importance. In addition, the impact of failures is e...
Sun-il Kim, Steven S. Lumetta
IOPADS
1997
152views more  IOPADS 1997»
14 years 11 months ago
Competitive Parallel Disk Prefetching and Buffer Management
We provide a competitive analysis framework for online prefetching and buffer management algorithms in parallel I/O systems, using a read-once model of block references. This has ...
Rakesh D. Barve, Mahesh Kallahalla, Peter J. Varma...
INFOCOM
2012
IEEE
13 years 4 days ago
Spectrum management and power allocation in MIMO cognitive networks
Cognitive radio (CR) techniques improve the spectrum utilization by exploiting temporarily-free frequency bands (i.e., in the time domain). The spectrum utilization can be boosted...
Diep N. Nguyen, Marwan Krunz
FGCN
2008
IEEE
199views Communications» more  FGCN 2008»
15 years 4 months ago
A Context-Sensitive Rule-Based Architecture for a Smart Building Environment
In a smart building environment nomadic users can benefit from specialised contextsensitive services. These can increase productivity and offer an improved lifestyle for users. Th...
John Herbert, John O'Donoghue, Xiang Chen