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CIKM
2011
Springer
14 years 1 months ago
Lower-bounding term frequency normalization
In this paper, we reveal a common deficiency of the current retrieval models: the component of term frequency (TF) normalization by document length is not lower-bounded properly;...
Yuanhua Lv, ChengXiang Zhai
TWC
2008
235views more  TWC 2008»
15 years 1 months ago
Optimal spectrum sensing framework for cognitive radio networks
Spectrum sensing is the key enabling technology for cognitive radio networks. The main objective of spectrum sensing is to provide more spectrum access opportunities to cognitive r...
Won-Yeol Lee, Ian F. Akyildiz
206
Voted
ICDE
2008
IEEE
155views Database» more  ICDE 2008»
16 years 3 months ago
Lattice Histograms: a Resilient Synopsis Structure
Despite the surge of interest in data reduction techniques over the past years, no method has been proposed to date that can always achieve approximation quality preferable to that...
Panagiotis Karras, Nikos Mamoulis
VTS
2008
IEEE
77views Hardware» more  VTS 2008»
15 years 8 months ago
Test-Pattern Ordering for Wafer-Level Test-During-Burn-In
—Wafer-level test during burn-in (WLTBI) is a promising technique to reduce test and burn-in costs in semiconductor manufacturing. However, scan-based testing leads to significa...
Sudarshan Bahukudumbi, Krishnendu Chakrabarty
GECCO
2007
Springer
162views Optimization» more  GECCO 2007»
15 years 8 months ago
Using pair approximations to predict takeover dynamics in spatially structured populations
The topological properties of a network directly impact the flow of information through a system. For example, in natural populations, the network of inter-individual contacts aff...
Joshua L. Payne, Margaret J. Eppstein