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ICALP
2007
Springer
14 years 1 months ago
Low Distortion Spanners
A spanner of an undirected unweighted graph is a subgraph that approximates the distance metric of the original graph with some specified accuracy. Specifically, we say H ⊆ G i...
Seth Pettie
INFOCOM
2009
IEEE
14 years 2 months ago
Beyond Trilateration: On the Localizability of Wireless Ad-Hoc Networks
— The proliferation of wireless and mobile devices has fostered the demand of context aware applications, in which location is often viewed as one of the most significant context...
Zheng Yang, Yunhao Liu, Xiang-Yang Li
VTC
2006
IEEE
121views Communications» more  VTC 2006»
14 years 1 months ago
Location-Dependent Parameterization of a Random Direction Mobility Model
— Mobility models are widely used in simulation-based performance analyses of mobile networks. However, there is a trade-off between simplicity and realistic movement patterns. S...
Bernd Gloss, Michael Scharf, Daniel Neubauer
TSP
2008
103views more  TSP 2008»
13 years 7 months ago
Low-Rank Variance Approximation in GMRF Models: Single and Multiscale Approaches
Abstract--We present a versatile framework for tractable computation of approximate variances in large-scale Gaussian Markov random field estimation problems. In addition to its ef...
Dmitry M. Malioutov, Jason K. Johnson, Myung Jin C...
LPAR
2010
Springer
13 years 5 months ago
Clause Elimination Procedures for CNF Formulas
Abstract. We develop and analyze clause elimination procedures, a specific family of simplification techniques for conjunctive normal form (CNF) formulas. Extending known procedu...
Marijn Heule, Matti Järvisalo, Armin Biere